Gold‐Catalyzed Sequential Amination/Annulation Reactions of 2‐Propynyl‐1,3‐dicarbonyl Compounds
摘要:
The gold(III)-catalyzed sequential amination/annulation reaction of 2-propynyl-1,3-dicarbonyl compounds 1 with primary amines 2 produces 1,2,3,5-substituted pyrroles 4 in moderate to high yields.
Synthesis of 1,2,3,5-tetrasubstituted pyrrole derivatives from 2-(2-bromoallyl)-1,3-dicarbonyl compounds
作者:Ayhan S Demir、Idris M Akhmedov、Özge Sesenoglu
DOI:10.1016/s0040-4020(02)01298-x
日期:2002.12
2-(2-Bromoallyl)-1,3-dicarbonyl compounds are converted into β-enamino, β-hydrazino esters and ketones, followed by base-promoted cyclization, leading to the formation of the corresponding 1,2,3,5-tetrasubstituted pyrroles. 1,2,4- and 1,2,3,4-Substituted pyrroles are also isolated as minor products. Starting from the 2-(2-bromoallyl)-cyclohexane-1,3-dione the corresponding tetrahydro indolone is prepared
Conversion of homochiral amines and α-amino esters to their chiral 1,2,3,5-substituted pyrrole derivatives via gold-catalysed amination/annulation reactions of 2-propynyl-1,3-dicarbonyl compounds
作者:Antonio Arcadi、Sabrina Di Giuseppe、Fabio Marinelli、Elisabetta Rossi
DOI:10.1016/s0957-4166(01)00468-2
日期:2001.10
Homochiral primary amines, amino alcohols and alpha -amino esters have been reacted with 2-propynyl-1,3-dicarbonyl compounds under gold catalysis leading to 1,2,5-trisubstituted 3-acylpyrrole derivatives in moderate to high yields and high enantiomeric excess. (C) 2001 Elsevier Science Ltd. All rights reserved.