An Exceptionally Mild Catalytic Thioester Aldol Reaction Inspired by Polyketide Biosynthesis
摘要:
This report details our discovery of a new catalytic ester aldol reaction using malonic acid half thioesters (MAHTs) that directly affords beta-hydroxythioesters. The reaction is catalyzed by combination of a Cu(II) salt and an amine base, and it can be performed under exceptionally mild conditions (23 degrees C, open to the air, wet solvent). Methyl malonic acid half thioesters afforded syn aldol products with distereoselectivities greater than 6:1.
Lanthanoid complex as a novel carbon dioxide carrier for the carboxylation of active methylene compounds under mild conditions
作者:Hiroshi Abe、Shohei Inoue
DOI:10.1039/c39940001197
日期:——
A lanthanoid complex, formed by the addition of a lanthanoid alkoxide to an isocyanate, serves as a novel carbon dioxide carrier for the rapid carboxylation of active methylene compounds under mild conditions.
Bioinspired Metal-Catalysed Doebner–Knoevenagel Condensations between Malonic Acid Half Thioesters and Aldehydes
作者:Fabrice Berrué、Sylvain Antoniotti、Olivier P. Thomas、Philippe Amade
DOI:10.1002/ejoc.200600880
日期:2007.4
Inspired by polyketide biosynthesis, unprecedented metal-catalysed Doebner–Knoevenagel condensations between MalonicAcid Half Thioesters (MAHTs) and various aldehydes have been achieved through the use of Yb(OTf)3 as catalyst, mimicking a five-domain polyketide synthase module for the first time. In the presence of 5-methoxybenzimidazole, stereo- and regiocontrol of the reaction proved to be high
An Exceptionally Mild Catalytic Thioester Aldol Reaction Inspired by Polyketide Biosynthesis
作者:Gojko Lalic、Allen D. Aloise、Matthew D. Shair
DOI:10.1021/ja029452x
日期:2003.3.1
This report details our discovery of a new catalytic ester aldol reaction using malonic acid half thioesters (MAHTs) that directly affords beta-hydroxythioesters. The reaction is catalyzed by combination of a Cu(II) salt and an amine base, and it can be performed under exceptionally mild conditions (23 degrees C, open to the air, wet solvent). Methyl malonic acid half thioesters afforded syn aldol products with distereoselectivities greater than 6:1.