Development of Four-Component Synthesis of Tetra- and Pentasubstituted Polyfunctional Dihydropyrroles: Free Permutation and Combination of Aromatic and Aliphatic Amines
作者:Longyun Lv、Sichao Zheng、Xiaotie Cai、Zhipeng Chen、Qiuhua Zhu、Shuwen Liu
DOI:10.1021/co300148c
日期:2013.4.8
reactions (4CRs) of but-2-ynedioates, two same/different primaryamines, and aldehydes for the synthesis of tetra- and pentasubstituted polyfunctional dihydropyrroles. If aromatic and aliphatic amines were used as reagents, four different series of products should be obtained via the permutation and combination of aromatic and aliphatic primaryamines. However, only three/two rather four different series
One-pot four-component domino reaction for the synthesis of substituted dihydro-2-oxypyrrole catalyzed by molecular iodine
作者:Abu T. Khan、Arindam Ghosh、Md. Musawwer Khan
DOI:10.1016/j.tetlet.2012.03.046
日期:2012.5
The synthesis of multi-functionalized dihydro-2-oxypyrrole can be achieved using one-pot four-component domino reaction from dialkylacetylene dicarboxylate, amines, and formaldehyde by employing molecular iodine as catalyst at room temperature. The salient features of the present method are: simple, straightforward, cost-effective, environmentally benign, and no column chromatographic separation is applicable on a broad range of substrates. (C) 2012 Elsevier Ltd. All rights reserved.
ZrCl4 as an efficient catalyst for one-pot four-component synthesis of polysubstituted dihydropyrrol-2-ones
Abstract An efficientsynthesis of polysubstituted dihydropyrrol-2-one derivativesviaone-pot four-component domino reaction of amines, dialkylacetylenedicarboxylates and formaldehyde in the presence of zirconium tetrachloride (ZrCl4) is described. The presented methodology offers several advantages such as simplicity of operation, good to high yields, short reaction times, inexpensive and readily