Reactions cyanamide. Medical search. Frequent questions

Cyanamide is also used in the synthesis of other pharmaceutical drugs including tirapazamine, etravirine, revaprazan, and dasantafil. (wikipedia.org)
A guanidino group is introduced by reaction of cyanamide with sarcosine In the industrial synthesis of creatine: This synthesis route mostly avoids problematic impurities like chloroacetic acid, iminodiacetic acid, or dihydrotriazine that occur in other routes. (wikipedia.org)
3-Amino-substituted 5-aminopyrazoles were found to be suitable substrates for the synthesis of new 4-aminopyrazolo[1,5-a][1,3,5]triazines (5-aza-9-deaza-adenines) when used in the one-pot, three-component reaction with cyanamide and triethyl orthoformate under microwave irradiation. (sunway.edu.my)
The operational simplicity, short reaction time, and good reproducibility are attractive features of the developed robust and practical approach for the synthesis of 7-amino-substituted 4-aminopyrazolo[1,5-a][1,3,5]triazines. (sunway.edu.my)
The first consists of the formation of hydrogen cyanide as a byproduct during the synthesis of acrylonitrile from the reaction of propylene and ammonia with air. (cdc.gov)
2019 ) Design and synthesis of cyanamides as potent and selective N-acylethanolamine acid amidase inhibitors. (academictree.org)
However, cyanamide is expensive and explosive,24,25 and the solubility of its derivates (dicyanamide or melamine) is low, therefore the synthesis of g-C3N4 with the desired (e.g., porous) structures, using these precursors, is either expensive or hard to operate. (docksci.com)
His research into the origins of life is focused on geologic settings that could have promoted the synthesis of complex organic compounds on the early Earth, specifically conditions capable of driving prebiotic oligomer synthesis reactions. (santafe.edu)

Water, hydrogen sulfide, and hydrogen selenide react with cyanamide to give urea, thiourea, and selenourea, respectively: H2NCN + H2E → H2NC(E)NH2 (E = O, S, Se) In this way, cyanamide behaves as a dehydration agent and thus can induce condensation reactions. (wikipedia.org)
Can hydrate cyanamide to urea. (proteopedia.org)
Carbonic anhydrase catalyzes cyanamide hydration to urea: is it mimicking the physiological reaction? (proteopedia.org)
We have studied the possibility of forming urea in the gas phase via different kinds of bi-molecular reactions: ion-molecule, neutral, and radical. (aanda.org)
Melamine can be synthesized by several methods, including the reaction of urea with formaldehyde, the reaction of dicyandiamide with ammonium chloride, and the reaction of cyanamide with ammonium carbonate. (thebiotek.com)
The most commonly used method is the reaction of urea with formaldehyde, which yields melamine with a high efficiency and yield. (thebiotek.com)

Derivatives of this compound are also referred to as cyanamides, the most common being calcium cyanamide (CaCN2). (wikipedia.org)
Calcium cyanamide is the chemical name for CaNCN or CaCN2. (wssajournals.org)

Solid cyanamide is produced by careful evaporation of the solvent and subsequent addition of a hydrolysis-labile ester of formic acid. (wikipedia.org)

A convenient method for the preparation of secondary amines which are not contaminated with primary or tertiary amines is the reaction of cyanamide with alkyl halides to N,N-dialkylcyanamides which can easily be hydrolyzed to dialkylamines and then decarboxylated. (wikipedia.org)
Upon alkylation, oxadiazoles can be converted into two different classes of azoles, including 1,3,4-oxadiazol-2(3H)‑ones and urazoles, depending on the reaction time and temperature, and the excess of alkyl halides used. (cmu.ac.th)

High pressure-assisted co-cyclization of disubstituted cyanamides with formamide or monosubstituted formamides gave 2-amino- or 2-monosubstituted amino-4,6-bis(disubstituted amino)-1,3,5-triazines in one pot. (heterocycles.jp)
but the ion-molecule reaction between NH 2 OHNH 2 OH 2 + and formamide is not too high. (aanda.org)

Containing both a nucleophilic and electrophilic site within the same molecule, cyanamide undergoes various reactions with itself. (wikipedia.org)
In essence, the formose reaction starts with one molecule of a simple compound called glycolaldehyde (made of hydrogen, carbon and oxygen) and ends with two. (yahoo.com)
A reaction between glycolaldehyde and formaldehyde makes a bigger molecule, splitting off fragments that feed back into the reaction and keep it going. (yahoo.com)
In our study, we tried adding another simple molecule called cyanamide to the formose reaction. (yahoo.com)

Cyanamide is produced by hydrolysis of calcium cyanamide, which in turn is prepared from calcium carbide via the Frank-Caro process. (wikipedia.org)
4) A chemical reaction method for producing polyvinyl chloride (PVC) using calcium carbide (CaC2) to generate acetylene (C2H2) in the presence of water, synthesizing acetylene with hydrogen chloride (HCl) to produce vinyl chloride monomer (CH2=CHCl), and then polymerizing vinyl chloride to generate polyvinyl chloride (CH2-CHCI) n. (ngochem.com)
Additionally, calcium carbide reacts with nitrogen at high temperatures to produce calcium cyanamide, which has wide applications in the agricultural industry as a fertilizer. (pressreleasenewsbox.com)

Calcium cyanamide combines nitrogen fertilisation with soil liming and broad suppression of hazardous organisms. (wssajournals.org)
Calcium cyanamide is a multifunctional nitrogen fertiliser since it delivers not only nitrogen but also lime and possesses herbicidal, bactericidal, and fungicidal properties. (wssajournals.org)
The nitrogen is found as cyanamide after dissolution (H2CN2). (wssajournals.org)
Lime nitrogen is an important raw material for the preparation of cyanamide. (ngochem.com)
The melt formed by the reaction of heated lime nitrogen with table salt is used in gold mining and nonferrous metal industry. (ngochem.com)

Cyanamide inhibits the enzyme acetaldehyde dehydrogenase, which really is responsible for acetaldehyde degradation in the blood. (wssajournals.org)
As a result, if alcohol is drunk after consuming cyanamide, even tiny amounts will result in an extremely unpleasant, long-lasting nausea as the acetaldehyde builds in the blood. (wssajournals.org)
[1] [2] The reaction has been variously termed a disulfiram-like reaction , alcohol intolerance , and acetaldehyde syndrome . (wikizero.com)

The physiological precursor guanidinoacetic is obtained analogously by reacting cyanamide with glycine. (wikipedia.org)
Pure g-C3N4 is obtained at ca. 500 °C when the precursor cyanamide is pretreated with a basic solution (like aqueous NaOH), as conﬁrmed by XRD (Figure 2B). (docksci.com)

It is industrially used in the manufacturing of calcium cyanamide and acetylene. (pressreleasenewsbox.com)

A chemical reaction called the formose reaction, first discovered in 1861, is one of the best examples of an autocatalytic reaction that could have happened on the early Earth. (yahoo.com)
Our lab is currently optimising this procedure in the hope we can manipulate the autocatalytic reaction to make common chemical reactions cheaper and more efficient, and their pharmaceutical products more accessible. (sciencenewslab.com)

Cyanamide can be regarded as a functional single carbon fragment which can react as an electrophile or nucleophile. (wikipedia.org)
Nevertheless, since calcium cyanamide can not provide an organic, carbon-rich substrate, the bacteria feed on the soil's natural carbon or humus. (wssajournals.org)
Sodium cyanide can also be prepared by heating sodium amide with carbon or by melting sodium chloride and calcium cyanamide together in an electric furnace (Hartung 1982). (cdc.gov)

A disulfiram-like drug is a drug that causes an adverse reaction to alcohol leading to nausea , vomiting , flushing , dizziness , throbbing headache , chest and abdominal discomfort , and general hangover -like symptoms among others. (wikizero.com)
[1] [2] A variety of other drugs cause disulfiram-like reactions upon consumption of alcohol as unintended drug interactions and side effects . (wikizero.com)
A number of drugs do not cause disulfiram-like reactions, but have other unintended interactions with alcoholic drinks. (wikizero.com)
As a result, when alcohol is ingested in the presence of Disulfiram, very characteristic reactions such as facial redness, tachycardia, nausea, or headache appear. (essentialhospitals.org)
Since then (1950), both disulfiram (Disulfiram®) and calcium cyanamide (Colme®) became the pharmacological treatment of choice for alcoholism. (essentialhospitals.org)

Even at low temperatures, the reaction occurs. (wssajournals.org)
XRD patterns of g-C3N4 synthesized from cyanamide at diﬀerent temperatures. (docksci.com)

In the first study, N-acylcyanamides were synthesized via a convenient ultrasound-assisted one-pot reaction starting from readily available carboxylic acids and sodium cyanamide. (cmu.ac.th)
The method deployed also enables rapid access to substituted imidazolone derivatives through a three-component coupling reaction of carboxylic acid, sodium cyanamide, and L-amino acid methyl esters. (cmu.ac.th)

In the latter case, they appeared due to the simultaneous consumption of alcohol and cyanamide. (essentialhospitals.org)

The main reaction exhibited by cyanamide involves additions of compounds containing an acidic proton. (wikipedia.org)
Scientists had previously found that the reaction with cyanamide would work only in mildly acidic conditions, which were likely not widespread on early Earth. (ucsd.edu)
First, consider the effect of pH-increase due to the reaction of an acidic fluid with a carbonate-bearing host rocks . (chempedia.info)

MeS).sub.2 C:NCN), 2-chloroacetamide, cyanamide, acrylamide, and 3-bromopropyl-1-cyanide, to yield appropriate compounds which can undergo further reactions, such as the conversion of a nitrile into amidocarbonyl, replacement of methylthio by ethylamino, etc. (justia.com)
Cyanamide downstream products are numerous, a leading group of which is guanidine compounds. (cnchemicals.com)
4) Nucleotide assembly compounds, condensing agents and leaving agents such as cyanamide and cyanogen (Yi et al. (santafe.edu)

Cyanamide dimerizes to give 2-cyanoguanidine (dicyandiamide). (wikipedia.org)

Herein, we report the photocatalytic decarboxylative alkenylation reactions of N -(acyloxy)phthalimide derived from α-amino and α-hydroxy acids with 1,1-diarylethene, and with cinnamic acid derivatives through double decarboxylation, using NaI and PPh 3 as redox catalysts. (rsc.org)
In addition, four aspects of the applications of g-C3N4 in catalysis are discussed: (1) as a base metal-free catalyst for NO decomposition, (2) as a reference material in diﬀerentiating oxygen activation sites for oxidation reactions over supported catalysts, (3) as a functional material to synthesize nanosized metal particles, and (4) as a metal-free catalyst for photocatalysis. (docksci.com)

And the continuous tubular reactor it plans to use has the advantages of high mass and heat transfer efficiency, safety production, short reaction period, etc. (cnchemicals.com)

When calcium cyanamide comes into touch with liquid water in the soil, it becomes activated. (wssajournals.org)
Cyanamide is efficient against several weeds , unwanted plants and their seeds, pests , slugs, wireworms, and several soil-borne fungi, like plasmodia, that are single-celled parasites of cabbage plants, in the top three to four centimetres of soil (Plasmodiophora brassicae). (wssajournals.org)
If you must use calcium cyanamide, for example, to prevent having to dispose of old stocks, we strongly advise you to first determine the pH value of your soil in order to avoid driving it to plant-intolerant heights. (wssajournals.org)
The working out of a method of manufacturing humus from waste products and a study of the reaction of the crop to improved soil conditions would encroach on the work of practically every section of the Institute. (journeytoforever.org)

Did this chemical reaction create the building blocks of life on Earth? (yahoo.com)
How did chemical reactions on the early Earth create complex, self-replicating structures that developed into living things as we know them? (yahoo.com)
RNA - which is still a crucial component of life today - can replicate itself and catalyse other chemical reactions. (yahoo.com)
We know whatever chemical reaction created ribonucleotides must have been able to happen in the messy, complicated environment found on our planet billions of years ago. (yahoo.com)
The formose reaction shares some common ingredients with a well-known chemical pathway to make ribonucleotides, known as the Powner-Sutherland pathway. (yahoo.com)
To the reaction flask in the early experiment, Miller added a chemical that at the time wasn't widely thought to have been available on early Earth. (ucsd.edu)
TECHNICAL chemistry may be regarded as the performance of a chemical reaction or series of reactions on a scale sufficiently large and by a method sufficiently economical to enable the product to be sold at a profit. (wikisource.org)
The problems which confront the investigators in this field of endeavor may, therefore, be divided into two classes according as they pertain to the chemical reaction involved, or to the process to be employed in carrying on this reaction. (wikisource.org)
It is a state-level high-tech enterprise, mainly engaged in the production of cyanamide downstream chemical new materials. (cnchemicals.com)
In recent years, Ningxia Beilite has been proactively extending to cyanamide chemical downstream sectors, optimising its industrial structure, striving to improve added value of its products and promoting green development. (cnchemicals.com)

Zinc cyanamide [5.139] and pure lead cyanamide are not explosive. (chempedia.info)

In particular we have focused on the activation energy of these reactions in order to find possible reactants that could be responsible for to barrierless (or very low energy) pathways. (aanda.org)
Activation of Cyanamide by a Molybdenum(0) Diphosphinic Centre. (ulisboa.pt)

In the third part study, TCCA and PPh3 were used as reagents in the cyclization reaction of thiosemicarbazates to prepare 5-aminosubstituted 2-methoxy-1,3,4-oxadiazoles. (cmu.ac.th)

An estimated 2-4% of hospital admissions are related to adverse drug reactions. (medscape.com)
These adverse drug reactions have a broad spectrum of clinical manifestations that can mimic those of other disease states, including both local and systemic conditions. (medscape.com)
The clinical patterns of adverse drug reactions of the oral cavity include xerostomia, swelling, nonspecific ulceration, vesiculobullous or ulcerative mucositis that mimics other disease states, nonspecific vesiculoulcerative mucositis, pigmentation, gingival enlargement, and medication-related osteonecrosis of the jaws. (medscape.com)
Individuals supplementing with creatine may experience minor adverse reactions such as muscle cramps, nausea, or diarrhea. (thefitboddojo.com)

However, once the formaldehyde runs out, the reaction stops, and the products start to degrade from complex sugar molecules into tar. (yahoo.com)

When combined, they can form a highly effective and versatile reagent that can be used in a wide range of organic reactions. (cmu.ac.th)

These are reactions that produce chemicals that encourage the same reaction to happen again, which means they can sustain themselves in a wide range of circumstances. (yahoo.com)

When you add cyanamide to the formose reaction, another of the products is a compound called 2-aminooxazole, which is used in chemistry research and the production of many pharmaceuticals. (yahoo.com)
We have used very accurate, highly correlated quantum chemistry calculations to locate and characterize the reaction pathways in terms of minima and transition states connecting reactants to products. (aanda.org)
Summary: On 12 April, it was announced that the EI report of Ningxia Beilite's construction project of 102,000 t/a cyanamide downstream products-guanidines was to be approved by local authorities. (cnchemicals.com)
On 12 April, the Administrative Committee of Ningxia Pingluo Industrial Park announced that it was to approve the EI report of Ningxia Beilite Biotechnology Co., Ltd. (Ningxia Beilite)'s construction project of 102,000 t/a cyanamide downstream products-guanidines. (cnchemicals.com)
Seeing this huge demand, Ningxia Beilite thus launched this large-scale raw material project, which can take advantage of its existing production equipment for cyanamide downstream products and supporting facilities. (cnchemicals.com)

Because the lime effect is equal to 60% CaO, calcium cyanamide can be liming like limestone with 60 grammes of calcium oxide in 100 grammes. (wssajournals.org)

TCCA and PPh3 were used to activate the reaction, which converted a range of carboxylic acids into N-acylcyanamides with good to excellent yields in a short time at room temperature without the need for additional base. (cmu.ac.th)

What's interesting about our study is the integration of the formose reaction and ribonucleotide production. (yahoo.com)

Shown below is the reaction path for transfer of a proton from water to the amine using an 8-water model (n=8) in which two bridges can serve to help stabilize any ionic form. (imperial.ac.uk)

The new study found that the reaction had successfully formed peptides. (ucsd.edu)
The 1958 reaction samples were analyzed by Parker and his current mentor, Facundo M. Fernández , a professor in the School of Chemistry and Biochemistry at Georgia Tech. They conducted liquid chromatography- and mass spectrometry-based analyses and found that the reaction samples from 1958 contained peptides. (ucsd.edu)
A reaction, A + B → C + D + q is found to have a positive entropy change. (rajboardexam.in)
The reaction of cyanamide, NH 2 CN(s) with oxygen was affected in a bomb calorimeter and ∆U was found to be - 742.7 kJ mol -1 of cyanamide at 298 K. Calculate the enthalpy change for the reaction at 298 K. (rajboardexam.in)

Autocatalytic reactions play crucial roles in biology, from regulating our heartbeats to forming patterns on seashells. (yahoo.com)

Cyanamide, under the trade name Dormex, is a common agricultural rest-breaking agent applied in spring to stimulate uniform opening of buds, early foliation and bloom. (wikipedia.org)

Cyanamide pigments are produced from industrial-grade calcium cyanamide which is first dissolved. (chempedia.info)

This approach eliminates the requirement for strictly anhydrous conditions, external heating, and long reaction times, as well as tedious multistep procedures. (cmu.ac.th)

Chemistry often focuses on clean, efficient and productive reactions, rather than messy combinations. (yahoo.com)
The reaction of the benzamides with Woollins' reagent, a highly efficient chemoselective selenation/reduction reagent, gave the corresponding N -aryl- N -(arylenethyl) benzoselenoamides in good yields. (mdpi.com)

Reactions may include lichen planus-like, erythema multiforme (EM)-like, pemphigoid-like, pemphigus -like, and lupus erythematosus (LE)-like reactions. (medscape.com)

The reaction is ignited by a spark, simulating lightning, which was likely very common on the early Earth. (ucsd.edu)

2014 ) A transition metal-free Minisci reaction: acylation of isoquinolines, quinolines, and quinoxaline. (academictree.org)

This indicates that the presence of hydroxyl ions facilitates the transformation of cyanamide to g-C3N4, probably due to the hydroxyl ions that promote the condensation process, by reacting with the hydrogen atoms on the edges of the intermediate. (docksci.com)
This report is based on the latest economic data, and it presents comprehensive and detailed insights regarding the primary process flow, raw material requirements, reactions involved, utility costs, operating costs, capital investments, pricing, and margins. (pressreleasenewsbox.com)

If it can be made using the formose reaction, only a small amount of glycolaldehyde will be needed to kickstart the reaction, cutting costs. (yahoo.com)

Cyanamide adds itself in the presence of N-bromosuccinimide to olefinic double bonds. (wikipedia.org)

The manganese complex of photosystem II in its reaction cycle-basic framework and possible realization at the atomic level. (fu-berlin.de)

The N≡C-NH2 form dominates, but in a few reactions (e.g. silylation) the diimide form appears to be important. (wikipedia.org)

Organisms3

Chemicals and Drugs5

Synthesis8

Urea6

CaCN22

Formic acid1

Alkyl halides2

Formamide2

Molecule4

Calcium carbide3

Nitrogen5

Acetaldehyde3

Precursor2

Acetylene1

Autocatalytic reaction2

Carbon3

Disulfiram5

Temperatures2

Sodium2

Consumption of alcohol1

Acidic3

Compounds3

Dicyandiamide1

Catalysts2

Short reaction1

Soil4

Chemical10

Explosive1

Activation2

Cyclization1

Adverse4

Formaldehyde1

Organic reactions1

Chemicals1

Products5

Lime1

Temperature1

Production1

Proton1

Found4

Patterns1

Agricultural1

Industrial1

Conditions1

Efficient2

Include1

Common1

Transition1

Process2

Small1

Presence1

Atomic1

Important1