A heterocyclic compound or ring structure is a cyclic compound that has atoms of at least two different elements as members of ... Many drugs are heterocyclic compounds. IUPAC Gold Book heterocyclic compounds Thomas L. Gilchrist "Heterocyclic Chemistry" 3rd ... Wikimedia Commons has media related to heterocyclic compounds. Wikiquote has quotations related to Heterocyclic compound. ... highlighting the role of heterocyclic compounds (purines and pyrimidines) in the genetic code. Heterocyclic compounds are ...
Heterocyclic compounds with 1 ring). ... It is a six-membered heterocyclic aromatic ring, one of several ... Chemistry of Heterocyclic Compounds. 45 (2): 130-150. doi:10.1007/s10593-009-0243-5. S2CID 94191027. (Webarchive template ... Aksenov, A. V.; Aksenova, I. V. (2009). "Use of the ring opening reactions of 1,3,5-triazines in organic synthesis (Review)". ... is an organic chemical compound with the formula (HCN)3. ... The most common derivative of 1,3,5-triazine is 1,3,5-triazine- ...
In organic chemistry, a dioxazolone is a cyclic carbonate incorporated into C2NO2 ring. It is an uncommon heterocyclic compound ... a potentially hazardous class of compounds". Journal of Organic Chemistry. 48 (21): 3845-7. doi:10.1021/jo00169a059. Park, ...
Fedin, E. I.; Todres, Z. V. (1970). "Studies in the field of aromatic heterocycles" (PDF). Chemistry of Heterocyclic Compounds ... 2004). "Product Class 11: 1,2,5-Thiadiazoles and Related Compounds". Category 2, Hetarenes and Related Ring Systems. doi: ... E 8d, 4th Edition Supplement: Hetarenes III (Five-Membered Rings with Two and More Heteroatoms in the Ring System) - Part 4. 14 ... Chemistry of Heterocyclic Compounds. 3: 68-70. doi:10.1007/BF00944264. S2CID 100997583. Houben-Weyl Methods of Organic ...
Sulfur heterocycles, Heterocyclic compounds with 2 rings). ... of several compounds consisting of two fused thiophene rings. ... Advances in Heterocyclic Chemistry. Advances in Heterocyclic Chemistry. Vol. 19. pp. 123-214. doi:10.1016/S0065-2725(08)60231-7 ... Thieno[2,3-b]thiophene CAS RN 250-84-0 b.p. 102 °C at 16 mmHg colorless oil. Thieno[3,4-b]thiophene CAS RN 250-65-7 m.p. 7.0- ... Thieno[2,3-b]thiophene was the first member of the series to be isolated. It was obtained in very low yield upon heating citric ...
... both of which are unsaturated heterocyclic ring compounds containing three nitrogen atoms. The basic formula is C2N3H2−. It can ... Advances in Heterocyclic Chemistry. Vol. 81. Academic Press. p. 167. doi:10.1016/S0065-2725(01)81012-6. ISBN 9780080493572. Zhu ... This enables polymers or metal organic framework compounds to be formed. Triazolate can also be substituted on its carbon atoms ... Heterocyclic compounds with 1 ring, Nitrogen compounds). ... be abbreviated by "tz". Known compounds include zinc, and ...
4-oxathiazol-2-one ring". Chemistry of Heterocyclic Compounds. 46 (4): 484-489. doi:10.1007/s10593-010-0535-9. S2CID 55033194. ... The oxathiazolones are a family of heterocyclic compounds in which the parent derivative has the molecular formula C2HNO2S and ... It has been proposed that the π system of the ring consists of CNS and CO2 "π islands" that prefer coplanarity to enhance inter ... ring π conjugation. The traditional route for 1,3,4-oxathiazol-2-one synthesis is via 1,3 dipolar cycloaddition, where ...
Oxepin Ring Systems Containing Two Rings". Seven-Membered Heterocyclic Compounds Containing Oxygen and Sulfur. The Chemistry of ... but the bicyclic ring system is part of the naturally occurring compounds perilloxin (I) from Perilla frutescens (variant acuta ... Heterocyclic Compounds (in German). Vol. 26th. New York: Wiley-Interscience. p. 96. ISBN 0-471-38210-8. Dimroth, K.; Pohl, G.; ... The latter compound can be synthesized from α,α′-dibromodimethyl ether (bis(bromomethyl)ether or BBME) which is accessible from ...
January 2008). Small Ring Heterocycles. Chemistry of Heterocyclic Compounds: A Series of Monographs. Wiley, Chemistry of ... Topics in Heterocyclic Chemistry, Synthesis of Heterocycles via Cycloadditions. Springer, Topics in Heterocyclic Chemistry. ... Small Ring Heterocycles (Wiley); Topics in Heterocyclic Chemistry (Springer). Hassner, Namboothiri (2012). Organic Syntheses ... International; Heterocyclic Commun.; Trends in Org. Chem. and was elected president of the Israel Chemical Society. Hassner is ...
Heterocyclic compounds with 2 rings, Simple aromatic rings, Nitrogen heterocycles). ... is any of the heterocyclic compounds having molecular formula C6H6N2 whose structure is two fused two pentagonal rings of six ... Topics in Heterocyclic Chemistry. Vol. 16. Springer. pp. 135-152. doi:10.1007/7081_2007_096. ISBN 978-3-642-00335-6. ( ...
... is a heterocyclic compound with the formula C5H8O. The six-membered C5O ring has the unsaturation adjacent to oxygen. The ... Kierkus (2001). "3,4‐Dihydro‐2H‐pyran". eEROS. doi:10.1002/047084289X.rd230. R. L. Sawyer and D. W. Andrus (1955). "2,3- ... 3, p. 276 R. A. Earl L. B. Townsend (1990). "Methyl 4-Hydroxy-2-butynoate". Organic Syntheses.; Collective Volume, vol. 7, p. ... 7, p. 160 Wuts, Peter G. M.; Greene, Theodora W. (2006). "Protection for the Hydroxyl Group, Including 1,2‐ and 1,3‐Diols". ...
... consisting of a six-membered benzene ring fused to a five-membered nitrogen-containing ring. The compound is based on the ... Indoline is an aromatic heterocyclic organic compound with the chemical formulation C8H9N. It has a bicyclic structure, ... Katritzky, A. R.; Pozharskii, A. F. (2000). Handbook of Heterocyclic Chemistry (2nd ed.). Academic Press. ISBN 0080429882. ... indole structure, but the 2-3 bond is saturated. By oxidation/dehydrogenation it can be converted to indoles. Indoline was used ...
It is a heterocyclic compound with a four-membered ring. Two sulfur atoms are adjacent, and the molecule is saturated. 1,2- ... The combination of ring strain, and lone pairs of electrons, which repel each other, on the sulfur atoms makes the sulfur- ... Dithiatopazine is a tricyclic compound with the -S-S- as a bridge. 1,2-Dithietan-3-one, the ketone of 1,2-dithietane, was ... Advances in Heterocyclic Chemistry. Vol. 77. pp. 221-284. doi:10.1016/S0065-2725(00)77007-3. ISBN 9780120207770. Nicolaou, K. C ...
... consisting of two six-membered benzene rings fused on either side of a five-membered nitrogen-containing ring. The compound's ... Carbazole is an aromatic heterocyclic organic compound. It has a tricyclic structure, ... but in which a second benzene ring is fused onto the five-membered ring at the 2-3 position of indole (equivalent to the 9a-4a ... In the third step, this compound is oxidized by red lead to carbazole itself. Another classic is the Bucherer carbazole ...
The pyrimidine ring system has wide occurrence in nature as substituted and ring fused compounds and derivatives, including the ... As is often the case with parent heterocyclic ring systems, the synthesis of pyrimidine is not that common and is usually ... Kenner, G. W.; Todd, Alexander (1957). Elderfield, R.C. (ed.). Heterocyclic Compounds. Vol. 6. New York: Wiley. p. 235. Pinner ... Pyrimidine (C4H4N2; /pɪˈrɪ.mɪˌdiːn, paɪˈrɪ.mɪˌdiːn/) is an aromatic, heterocyclic, organic compound similar to pyridine (C5H5N ...
... is a heterocyclic organic compound, more precisely a heteroaromatic. It is one of many pyridinedicarboxylic acids and consists ... of a pyridine ring carrying to carboxy groups in the 3- and 5-positions. Dinicotinic acid can be formed by heating pyridine-2,3 ... Organic compounds. J. Trotter. Dordrecht: Springer. 1975. p. 174. ISBN 978-94-017-3121-8. OCLC 859588799.{{cite book}}: CS1 ... ISBN 978-3-642-92449-1. OCLC 913710178.{{cite book}}: CS1 maint: location missing publisher (link) Alam, Mahbub; Khan, M. ...
v t e (Sesquiterpene lactones, Heterocyclic compounds with 3 rings, All stub articles, Organic chemistry stubs). ... There are two subclasses, structural isomers differing in the location that part of the lactone is bonded to the central ring, ... doi:10.1007/978-3-642-22144-6_134. ISBN 978-3-642-22143-9. Hu, Xirui; Musacchio, Andrew J.; Shen, Xingyu; Tao, Yujia; Maimone, ...
... s are substituted thiepins, with a nitrogen replacing a carbon in the seven-membered heterocyclic compound. Depending ... Benzothiazepines have a single benzene attached to the ring, while dibenzothiazepines have two. Diltiazem, a benzothiazepine, ... Thiazepines at the U.S. National Library of Medicine Medical Subject Headings (MeSH) v t e (All stub articles, Heterocyclic ... on the location of the nitrogen, one distinguishes 1,3-thiazepine and 1,4-thiazepine. ...
... s are a class of chemical compounds that have a core structure that consists of a pyran ring fused to a coumarin ... v t e (Pyrans, Coumarins, Heterocyclic compounds with 3 rings, All stub articles, Organic compound stubs). ... In the biosyntheses of pyranocoumarins, the pyran ring is formed via the methylerythritol phosphate pathway and the coumarin is ...
... (pyridine-2,4-dicarboxylic acid) is an heterocyclic organic compound, more precisely a heteroaromatic. It ... belongs to the group of pyridine dicarboxylic acids and consists of a pyridine ring which carries two carboxy groups in the 2- ... Richard Wolffenstein: Die Pflanzenalkaloide, 3. Auflage, Berlin 1922, S. 67 ([1], p. 67, at Google Books). https://www. ...
... is a heterocyclic aromatic organic compound. This bicyclic compound may be viewed as fused rings of the aromatic ... Benzimidazole derivatives are among the most frequently used ring systems for small molecule drugs listed by the United States ... Many pharmaceutical agents belong to the benzimidazole class of compounds. For example: Angiotensin II receptor blockers such ... N,N'-Dialkylbenzimidazolium salts are precursors to certain N-heterocyclic carbenes. ...
... is a 5-membered heterocyclic compound that contains both sulfur and nitrogen. The term 'thiazole' also refers to a large family ... thiazepine in a 4-electron electrocyclic ring opening and then to a 7-thia-2-azanorcaradiene in a 6-electron electrocyclic ring ... The thiazole ring is notable as a component of the vitamin thiamine (B1). Thiazoles are members of the azoles, heterocycles ... Thiazoles are generally formed via reactions of cysteine, which provides the N-C-C-S backbone of the ring. Thiamine does not ...
... is an aromatic heterocyclic compound with the chemical formula C 7H 5NS. It is colorless, slightly viscous liquid ... The heterocyclic core of the molecule is readily substituted at the unique methyne centre in the thiazole ring. It is a ... "Flavouring Group Evaluation 76, (FGE.76) - Consideration of sulphur-containing heterocyclic compounds evaluated by JECFA (59th ... Although the parent compound, benzothiazole is not widely used, many of its derivatives are found in commercial products or in ...
... is a saturated heterocyclic compound containing one oxygen, one sulfur and four carbon atoms in a ring. The formula ... 4-Oxathiane or p-Oxathiane the most important This set index article lists chemical compounds articles associated with the same ... There are three isomers: 1,2-Oxathiane or o-Oxathiane 1,3-Oxathiane or m-Oxathiane 1, ...
Five-membered rings, Sulfur-nitrogen compounds, All stub articles, Organic compound stubs). ... In chemistry, dithiadiazoles are a family of heterocyclic compounds with the formula RCN2S2. Two isomers have been studied: the ... The traditional entry to dithiadiazole chemistry is[citation needed] the mono-cation RCN2S+ 2, an aromatic ring with six π- ... in which nitrogens and sulfurs alternate along the ring. In both cases, the species are of interest as examples of paramagnetic ...
... is a seven-membered heterocyclic compound with two nitrogen atoms (e.g., in ring positions 1 and 2). Types include: 1 ... 4-diazepine ring v t e (Articles with short description, Short description is different from Wikidata, All stub articles, ... 2-diazepine 1,3-diazepine 1,4-diazepine Benzodiazepines, a class of commonly used medications whose structure contains a 1, ...
... is a heterocyclic compound containing a saturated four-membered ring with three carbon atoms and one sulfur atom. ... Four-membered rings, Foul-smelling chemicals, All stub articles, Heterocyclic compound stubs). ... Leśniak, S; Lewkowski, J; Kudelska, W; Zając, A (2008). "Thietanes and Thietes: Monocyclic". Comprehensive Heterocyclic ... Comprehensive Heterocyclic Chemistry II. 1 (24): 773-802. doi:10.1016/B978-008096518-5.00024-1. Sievert, Thorbjörn; Laska, ...
Comprehensive Heterocyclic Chemistry: The Structure, Reactions, Synthesis and Uses of Heterocyclic Compounds. Vol. 2. Pergamon ... The structure of pyridine-N-oxide is very similar to that of pyridine with respect to the parameters for the ring. The molecule ... Pyridine-N-oxide is the heterocyclic compound with the formula C5H5NO. This colourless, hygroscopic solid is the product of the ... The compound is used infrequently as an oxidizing reagent in organic synthesis. ...
Heterocyclic compounds with 3 rings, Nitrogen heterocycles). ...
... is the name given to either of two heterocyclic compounds with the formula C4H4N2O: 2-pyrimidone and 4-pyrimidone. ... ring. Derivatives of pyrimidone are the basis of many other biological molecules, including: Nucleobases, such as cytosine ... The compounds can also be called 2-hydroxypyrimidine or 4-hydroxypyrimidine respectively, based on a substituted pyrimidine, or ... v t e (Chemical articles with multiple compound IDs, Multiple chemicals in an infobox that need indexing, Chemical articles ...
... is a heterocyclic organic compound with the molecular formula C8H9N. The parent compound has a bicyclic structure, ... consisting of a six-membered benzene ring fused to a five-membered nitrogen-containing ring. The compound's structure is ... Another route involves [3+2] cycloaddition of the azomethine ylides (e.g. (CH2)2NR) to quinone in the presence of suitable ... similar to indoline except that the nitrogen atom is in the 2 position instead of the 1 position of the five-membered ring. ...