Construction of Nitrogen-Containing 9-Membered Ring Epoxy Vinyl Ethers via Gold(I)-Catalyzed Intramolecular Cyclization Reactions of Acyclic 5-Aza-2,3-epoxy-7-yn-1-ols

2014 ◽  
Vol 61 (12) ◽  
pp. 1281-1288 ◽  
Author(s):  
Hsin-Hui Lin ◽  
Yi-Ju Chen ◽  
Kuan-Yu Liao ◽  
Ming-Chang P. Yeh
Keyword(s):  
Intramolecular Cyclization ◽  
Membered Ring ◽  
Cyclization Reactions ◽  
Vinyl Ethers

ChemInform Abstract: Phosphorus-Containing Ketenes as Reagents for Intramolecular Cyclization Reactions.

ChemInform ◽  
2010 ◽  
Vol 22 (3) ◽  
pp. no-no
Author(s):  
O. I. KOLODYAZHNYI ◽  
E. V. GRISHKUN ◽  
V. I. YAKOVLEV ◽  
V. P. KUKHAR'
Keyword(s):  
Intramolecular Cyclization ◽  
Cyclization Reactions ◽  
Phosphorus Containing

ChemInform Abstract: Nucleophilic Intramolecular Cyclization Reactions of Alkynechalcogenolates.

ChemInform ◽  
2000 ◽  
Vol 31 (41) ◽  
pp. no-no
Author(s):  
M. A. Abramov ◽  
W. Dehaen ◽  
B. D'hooge ◽  
M. L. Petrov ◽  
S. Smeets ◽  
...  
Keyword(s):  
Intramolecular Cyclization ◽  
Cyclization Reactions

scholarly journals Correlation between Yield and Reduced Mass of Raw Materials in Intermolecular and Intramolecular Cyclization Reactions

2020 ◽  
Author(s):  
Masatoshi Kawashima
Keyword(s):  
Intramolecular Cyclization ◽  
Raw Materials ◽  
Reaction System ◽  
Diels Alder ◽  
Regression Equation ◽  
Reaction Site ◽  
Coupling Reactions ◽  
Cyclization Reactions ◽  
Intermolecular Reaction ◽  
Intermolecular Reactions

Correlation between yield and reduced mass of raw materials in intramolecular C-N, C-C, C-O coupling reactions and intramolecular/intermolecular Diels-Alder reactions was revealed. The regression equation was found to be the same as that of intermolecular reactions; yield = -0.1861<i>M</i><sub>AB</sub>/(<i>n</i><sub>A</sub><i>n</i><sub>B</sub><i>n</i><sub>I</sub>)+100.0, where <i>M</i><sub>AB</sub> is the reduced mass per mole and <i>n</i><sub>A</sub> and <i>n</i><sub>B</sub> are the total number of each reaction site in molecular A and molecular B in the reaction system, and <i>n</i><sub>I</sub> is the number to distinguish whether it is a intramolecular reaction or intermolecular reaction.

scholarly journals Sugar-derived oxazolone pseudotetrapeptide as γ-turn inducer and anion-selective transporter

2019 ◽  
Vol 15 ◽  
pp. 2419-2427
Author(s):  
Sachin S Burade ◽  
Sushil V Pawar ◽  
Tanmoy Saha ◽  
Navanath Kumbhar ◽  
Amol S Kotmale ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Amino Acid ◽  
Molecular Modeling ◽  
Intramolecular Cyclization ◽  
Membered Ring ◽  
Conformational Study ◽  
Oxazole Ring ◽  
Solution State ◽  
Modeling Studies ◽  
Molecular Modeling Studies

The intramolecular cyclization of a C-3-tetrasubstituted furanoid sugar amino acid-derived linear tetrapeptide afforded an oxazolone pseudo-peptide with the formation of an oxazole ring at the C-terminus. A conformational study of the oxazolone pseudo-peptide showed intramolecular C=O···HN(II) hydrogen bonding in a seven-membered ring leading to a γ-turn conformation. This fact was supported by a solution-state NMR and molecular modeling studies. The oxazolone pseudotetrapeptide was found to be a better Cl−-selective transporter for which an anion–anion antiport mechanism was established.

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