Selective syntheses of novel highly functionalized β-aminocyclohexanecarboxylic acids
摘要:
Highly functionalized beta-aminocyclohexanecarboxylate regio- and stereoisomers were synthetized from racemic unsaturated bicyclic beta-lactams via enzymatic resolution, selective transformation of the C-C double bond by stereoselective epoxidation, and regioselective oxirane ring opening with azide or cyanide as nucleophile. (C) 2011 Elsevier Ltd. All rights reserved.
Selective syntheses of novel highly functionalized β-aminocyclohexanecarboxylic acids
摘要:
Highly functionalized beta-aminocyclohexanecarboxylate regio- and stereoisomers were synthetized from racemic unsaturated bicyclic beta-lactams via enzymatic resolution, selective transformation of the C-C double bond by stereoselective epoxidation, and regioselective oxirane ring opening with azide or cyanide as nucleophile. (C) 2011 Elsevier Ltd. All rights reserved.
Efficient continuous-flow synthesis of novel 1,2,3-triazole-substituted β-aminocyclohexanecarboxylic acid derivatives with gram-scale production
作者:Sándor B Ötvös、Ádám Georgiádes、István M Mándity、Lóránd Kiss、Ferenc Fülöp
DOI:10.3762/bjoc.9.172
日期:——
simple and efficient continuous-flow procedure is reported. The 1,3-dipolar cycloaddition reactions were performed with copperpowder as a readily accessible Cu(I) source. Initially, high reaction rates were achieved under high-pressure/high-temperatureconditions. Subsequently, the reaction temperature was lowered to room temperature by the joint use of both basic and acidic additives to improve the safety