Access to Chiral Diamine Derivatives through Stereoselective Cu-Catalyzed Reductive Coupling of Imines and Allenamides
作者:Toolika Agrawal、Robert T. Martin、Stephen Collins、Zachary Wilhelm、Mytia D. Edwards、Osvaldo Gutierrez、Joshua D. Sieber
DOI:10.1021/acs.joc.0c02971
日期:2021.4.2
inducers in stereoselective synthesis that are challenging to prepare in a straightforward and stereoselective manner. Herein, we disclose a cost-effective and readily available Cu-catalyzed system for the reductive coupling of a chiral allenamide with N-alkyl substituted aldimines to access chiral 1,2-diamino synthons as single stereoisomers in high yields. The method shows broad reaction scope and
Deep eutectic solvent catalyzed eco-friendly synthesis of imines and hydrobenzamides
作者:Najmedin Azizi、Mahtab Edrisi
DOI:10.1007/s00706-015-1447-2
日期:2015.10
AbstractThe urea–choline chloride-based deep eutectic solvent was found to be an efficient catalyst and reaction media for the additive-free synthesis of imines (Schiff bases) and hydrobenzamides by the reaction of aldehydes with amines and ammonia in good to high yields. Outstanding features of this protocol were the general and atom-economical reaction, absence of external catalysts and additives
Concise synthesis of spergualin-inspired molecules with broad-spectrum antibiotic activity
作者:Victoria A. Assimon、Hao Shao、Sylvie Garneau-Tsodikova、Jason E. Gestwicki
DOI:10.1039/c4md00572d
日期:——
There is a growing need to identify new, broad-spectrum antibiotics. The natural productspergualin was previously shown to have promising anti-bacterial activity and a privileged structure, but its challenging synthesis had limited further exploration. For example, syntheses of spergualin and its analogs have been reported in approximately 10 linear steps, with overall yields between 0.3 and 18%. Using
88. Symmetrical triad prototropic systems. Part VIII. The analogy between symmetrical triad systems and aromatic side-chain reactivity, and the effect of m-substitution on mobility and equilibrium in the αγ-diphenylmethyleneazomethine system
作者:Charles William Shoppee
DOI:10.1039/jr9320000696
日期:——
IBX works efficiently under solvent free conditions in ball milling
作者:Tapas Kumar Achar、Saikat Maiti、Prasenjit Mal
DOI:10.1039/c4ra00415a
日期:——
explosiveness at high temperature and poor solubility in common organic solvents except DMSO. Since the discovery of Dess–Martin Periodinane in 1983, several modified IBX systems have been reported. However, under ballmilling conditions, IBX works efficiently with various organic functionalities at ambient temperature under solvent free conditions. Also, the waste IBA (2-iodosobenzoic acid) produced