Loading...
*  Investigation of the nitronate Nazarov cyclization
... causing the pentadienyl cation to be relatively stable and unwilling to undergo cyclization. To improve this cyclization, the ... The Nazarov cyclization is a common synthetic tool in the synthesis of cyclopentenone rings. The reaction is characterized by a ... This cyclization is less favoured due to the electron donating ability of the nitrogen atom, ... forming the cyclopentadienyl cation that undergoes cyclization. An extension of this methodology involves using a divinyl imine ...
http://library2.smu.ca/handle/01/26258
*  Rhodium: Drug Chemistry Archive
LSD Total Synthesis by Cobalt-catalyzed cyclization of 4-Ethynyl-Indole-3-Acetonitrile (PDF) ...
https://www.erowid.org/archive/rhodium/chemistry/index.html
*  Antibody catalyzed cationic cyclization | Science
New catalysts for cationic cyclization may be of general use in the formation of carbon-carbon and carbon-heteroatom bonds ... An antibody has been induced that efficiently catalyzes a cationic cyclization in which an acyclic olefinic sulfonate ester ...
http://science.sciencemag.org/content/264/5163/1289
*  An Investigation of Norpropoxyphene Cyclization in Methanol | Sigma-Aldrich
An Investigation of Norpropoxyphene Cyclization in Methanol. By: Huahua Jian Ph.D, Sandra Ybarra, Derrell Johnson MS, Isil ...
https://www.sigmaaldrich.com/technical-documents/articles/biology/norpropoxyphene-cyclization-in-methanol.html
*  Knottin cyclization: impact on structure and dynamics
Involvement of cyclization reaction in the structure; Transfer of geranyl moiety to the modified tryptophan; Description on the ...
http://connection.ebscohost.com/c/articles/42010225/knottin-cyclization-impact-structure-dynamics
*  TSSI Unveils Automatic Cyclization Technology in the Latest
... Solstice-TDS 2016.1 Product Release: Beaverton, Ore., June 23, 2016 ... The latest innovation in Solstice-TDS 2016.1 is the TimeTable module offering the state-of-the-art automatic cyclization ... TSSI Unveils Automatic Cyclization Technology in the Latest Solstice-TDS 2016.1 Product Release ...
http://www10.edacafe.com/nbc/articles/1/1435938/TSSI-Unveils-Automatic-Cyclization-Technology-Latest-Solstice-TDS-2016.1-Product-Release
*  Lactone preparation by cyclization - Patent # 4247468 - PatentGenius
The cyclization reaction may be carried out in the absence of an added solvent or in the presence of a solvent.. Preferred ... As indicated in Table I, the mol percent yield of BBL from the cyclization was 83.1% and the BBL assayed 96.6% purity. The ... Sufficient base, such as the alkali, is used to maintain the pH below 4.0 during the cyclization, for example from about0.5 to ... In this example BBL was produced in a cyclization reaction carried out neat, that is, without an added organic solvent.. DBBA ...
http://www.patentgenius.com/patent/4247468.html
*  Ene cyclization reaction in heterocycle synthesis - Organic & Biomolecular Chemistry (RSC Publishing)
... many exciting reports have demonstrated the broad scope and synthetic utility of ene cyclization and the versatility of oxonium ... The ene cyclization has evolved to become an indispensable tool for the synthesis of various ring size heterocyclic compounds. ... Ene cyclization reaction in heterocycle synthesis P. Saha and A. K. Saikia, Org. Biomol. Chem., 2018, 16, 2820 DOI: 10.1039/ ... The ene cyclization has evolved to become an indispensable tool for the synthesis of various ring size heterocyclic compounds. ...
https://pubs.rsc.org/en/content/articlelanding/2018/ob/c8ob00429c
*  Effect of the his residue on the cyclization of b ions | SpringerLink
Harrison, A. G. Cyclization of Peptide b9 Ions. J. Am. Soc. Mass Spectrom. 2009, 10, 2248-2253.CrossRefGoogle Scholar ... Harrison, A. G. Sequence Scrambling Through Cyclization of b 5 Ions. J. Am. Soc. Mass Spectrom. 2008, 19, 1776-1780.CrossRef ... Chen, X.; Yu, L.; Steill, J. D.; Oomens, J.; Polfer, N. C. Effect of Peptide Fragment Size on the Propensity of Cyclization in ... This indicates less active cyclization/reopening followed by fragmentation of common structures for b n ions containing His ...
https://link.springer.com/article/10.1016%2Fj.jasms.2010.05.006
*  Molecules | Free Full-Text | Iodine-Catalyzed Prins Cyclization of Homoallylic Alcohols and Aldehydes
Under similar conditions, the Prins cyclization of six alcohols containing an endocyclic double bond (primary, secondary, or ... The iodine-catalyzed Prins cyclization of homoallylic alcohols and aldehydes was investigated under metal-free conditions and ... Keywords: isochromene; pyrans; prins cyclization; iodine; DFT calculations isochromene; pyrans; prins cyclization; iodine; DFT ... Iodine-Catalyzed Prins Cyclization of Homoallylic Alcohols and Aldehydes. Kachi R. Kishore Kumar Reddy 1. ...
http://mdpi.com/1420-3049/18/9/11100
*  Reversible Bergman cyclization, AFM image - Stock Image C032/5433 - Science Photo Library
... for a reversible Bergman cyclization. Researchers used non-contact AFM to observe this molecular rearrangement, a key step in ... Reversible Bergman cyclization. Atomic force microscopy (AFM) image of the starting point (a brominated aromatic compound) ... Keywords: 1, 2016, 21st century, afm image, aromatic, atomic force microscope, atomic force microscopy, bergman cyclization, ... Caption: Reversible Bergman cyclization. Atomic force microscopy (AFM) image of the starting point (a brominated aromatic ...
http://www.sciencephoto.com/media/803130/view
*  CLIPS Cyclization - Creative Peptides
Application of CLIPS Cyclization. As a technology for peptide cyclization, the CLIPSTM (Chemically Linked Peptides on Scaffolds ... CLIPS Cyclization can be used for conformational fixation of free peptides in solution, while it also applies to solid-phase ... The reaction of CLIPS Cyclization is extremely clean and fast. It runs very well with linear peptides which have 2-30 amino ... The reaction conditions of CLIPS Cyclization are extremely mild (. ℃, aqueous-buffered solutions, pH 7.8) and fully compatible ...
https://www.creative-peptides.com/services/clips-cyclization.html
*  InBr3-Catalyzed Cyclization of Glycals with Aryl Amines.
Glycal Cyclization InBr3-Catalyzed Cyclization of Glycals with Aryl Amines** Jhillu S. Yadav,* Basi V. S. Reddy, Katta V. Rao, ... InBr3-Catalyzed Cyclization of Glycals with Aryl Amines.. код для вставки. код для вставки на сайт или в блог. Ширина: (. aвто ... l-rhamnal also underwent cyclization with aryl amines to produce derivatives 3 p and 3 q. Under similar reaction conditions d- ... xylal also underwent cyclization with aryl amines to afford the corresponding cyclic adducts 3 r and 3 s. Figure 2. ...
https://www.docme.ru/doc/1947092/inbr3-catalyzed-cyclization-of-glycals-with-aryl-amines
*  Copper-Catalyzed Intramolecular N-S Bond Formation by Oxidative Dehydrogenative Cyclization
... Zhen Wang, Yoichiro Kuninobu* and ... cyclization, a new nitrogen-sulfur bond is formed by N-H/S-H coupling. The present reaction tolerates various functional groups ...
http://www.organic-chemistry.org/abstracts/lit4/104.shtm
*  Studies Concerning the Cyclization of Some 4-Bromoacetylpiperidines to the Corresponding 3-Quinuclidinones | RTI
Carroll, F., Ferguson, A. M., & Lewis, J. B. (1966). Studies Concerning the Cyclization of Some 4-Bromoacetylpiperidines to the ... Studies Concerning the Cyclization of Some 4-Bromoacetylpiperidines to the Corresponding 3-Quinuclidinones. ...
https://www.rti.org/publication/studies-concerning-cyclization-some-4-bromoacetylpiperidines-corresponding-3
*  Gold promoted arylative cyclization of alkynoic acids with arenediazonium salts - Organic & Biomolecular Chemistry (RSC...
Alkynoic acids derived from salicylic acid and analogues undergo arylative cyclization with arenediazonium salts promoted by ... Gold promoted arylative cyclization of alkynoic acids with arenediazonium salts U. A. Carrillo-Arcos and S. Porcel, Org. Biomol ... Alkynoic acids derived from salicylic acid and analogues undergo arylative cyclization with arenediazonium salts promoted by ...
https://pubs.rsc.org/en/Content/ArticleLanding/OB/2018/C7OB02447A
*  Bergman cyclization - Wikipedia
The Bergman cyclization or Bergman reaction or Bergman cycloaromatization is an organic reaction and more specifically a ... "Reversible Bergman cyclization by atomic manipulation". Nature Chemistry. Bibcode:2016NatCh...8..220S. doi:10.1038/nchem.2438. ... demonstrated a reversible Bergman cyclisation for the first time using an atomic force microscope. When learning about the ...
https://en.wikipedia.org/wiki/Bergman_cyclization
*  Radical cyclization - Wikipedia
Anionic Michael-type cyclization is an alternative to radical cyclization of activated olefins. Metal-catalyzed cyclization ... Radical cyclizations are much faster than analogous anionic cyclizations, and avoid β-elimination side reactions. ... 8) In comparison to cationic cyclizations, radical cyclizations avoid issues associated with Wagner-Meerwein rearrangements, do ... exo cyclization is favored over endo cyclization (macrocyclizations constitute the major exception to this rule). 5-hexenyl ...
https://en.wikipedia.org/wiki/Radical_cyclization
*  Molecules | Free Full-Text | One-Pot Tandem Synthesis of 2-Arylquinazolines by a Multicomponent Cyclization Reaction
One-Pot Tandem Synthesis of 2-Arylquinazolines by a Multicomponent Cyclization Reaction. Leping Ye * , Lin Yu, Lijun Zhu and ... Ye L, Yu L, Zhu L, Xia X. One-Pot Tandem Synthesis of 2-Arylquinazolines by a Multicomponent Cyclization Reaction. Molecules. ... Ye, L.; Yu, L.; Zhu, L.; Xia, X. One-Pot Tandem Synthesis of 2-Arylquinazolines by a Multicomponent Cyclization Reaction. ... Keywords: quinazolines; multicomponent; cyclization reaction; one-pot tandem synthesis quinazolines; multicomponent; ...
http://www.mdpi.com/1420-3049/18/11/13860
*  Enantioselective cyclization of enamide-ynes and application to the synthesis of the kopsifoline core.
We report the palladium-catalyzed enantioselective cyclization of 1,6-enamidynes to form spirocyclic ring systems. We applied ... We report the palladium-catalyzed enantioselective cyclization of 1,6-enamidynes to form spirocyclic ring systems. We applied ...
http://www.biomedsearch.com/nih/Enantioselective-cyclization-enamide-ynes-application/23772095.html
*  Tyrosine-lipid peroxide adducts from radical termination: para coupling and intramolecular Diels-Alder cyclization. | Sigma...
Tyrosine-lipid peroxide adducts from radical termination: para coupling and intramolecular Diels-Alder cyclization.. [Roman ... The primary peroxide adducts subsequently undergo intramolecular Diels-Alder (IMDA) cyclization, affording a number of ...
https://www.sigmaaldrich.com/catalog/papers/21090613
*  Ultrasonicated Synthesis of N-Benzyl-2,3-substituted Morpholines, via the Mitsunobu Diol Cyclisation
... B. Jayachandra Reddy and ... The key steps were microwave assisted Friedel-crafts acylation and diol cyclization carried out via an ultra sonication of ...
https://www.hindawi.com/journals/jchem/2010/931015/abs/