Selective reactivity of electron-rich aryl iodides in the Heck arylation of disubstituted alkenes catalyzed by palladium–arylurea complexes
摘要:
A catalyst consisting of 1 mol % of the 1:2 complex of Pd(OAc)(2) with N-(4-carbethoxyphenyl)urea promotes the Heck arylation of 2- or 3-substituted, conjugated esters, nitriles, aldehydes, and ketones (an uncharacteristically broad range of substrates), but only with electron-rich aryl iodides (an uncharacteristically narrow range of halides). (C) 2013 Elsevier Ltd. All rights reserved.
A Versatile Catalyst for Heck Reactions of Aryl Chlorides and Aryl Bromides under Mild Conditions
作者:Adam F. Littke、Gregory C. Fu
DOI:10.1021/ja010988c
日期:2001.7.1
for Heck reactions of arylchlorides and bromides. A sterically and electronically diverse array of aryl bromides, as well as activated arylchlorides, couple with a range of mono- and disubstituted olefins at room temperature, furnishing the arylated product with high E/Z stereoselection. The corresponding reactions of a broad spectrum of electron-neutral and electron-rich arylchlorides proceed at
Pd–arylurea complexes for the Heck arylation of crotonic and cinnamic substrates
作者:Matthew R. Smith、Jung Yun Kim、Marco A. Ciufolini
DOI:10.1016/j.tetlet.2013.01.077
日期:2013.4
A catalyst consisting of the 1:2 complex of Pd(OAc)(2) (1 mol %) with N-(4-carbethoxy)-phenylurea promotes the Heck arylation of a range of crotonic and cinnamic substrates, including aldehydes, ketones, esters, and nitriles, with electron-rich-but not electron-deficient-aryl iodides. (c) 2013 Elsevier Ltd. All rights reserved.
Selective reactivity of electron-rich aryl iodides in the Heck arylation of disubstituted alkenes catalyzed by palladium–arylurea complexes
作者:Matthew R. Smith、Young Jin Jang、Jung Yun Kim、Marco A. Ciufolini
DOI:10.1016/j.tet.2013.09.019
日期:2013.11
A catalyst consisting of 1 mol % of the 1:2 complex of Pd(OAc)(2) with N-(4-carbethoxyphenyl)urea promotes the Heck arylation of 2- or 3-substituted, conjugated esters, nitriles, aldehydes, and ketones (an uncharacteristically broad range of substrates), but only with electron-rich aryl iodides (an uncharacteristically narrow range of halides). (C) 2013 Elsevier Ltd. All rights reserved.