Pd-Catalyzed Carbonylation of Diazo Compounds at Atmospheric Pressure: A Catalytic Approach to Ketenes
作者:Zhenhua Zhang、Yiyang Liu、Lin Ling、Yuxue Li、Yian Dong、Mingxing Gong、Xiaokun Zhao、Yan Zhang、Jianbo Wang
DOI:10.1021/ja107351d
日期:2011.3.30
and affects the diastereoselectivity of the β-lactam products by assisting isomerization of the addition intermediate. On the other hand, the acylketenes generatedfrom the Pd-catalyzed carbonylation of α-diazoketones react with imines in a formal [4 + 2] cycloaddition manner to afford 1,3-dioxin-4-one derivatives. This straightforward carbonylation provides a new approach toward highly efficient catalytic
Finta, Zoltan; Hell, Zoltan; Toke, Laszlo, Journal of Chemical Research - Part S, 2000, # 5, p. 242 - 244
作者:Finta, Zoltan、Hell, Zoltan、Toke, Laszlo
DOI:——
日期:——
Diastereoselectivity in the formation of bicyclic cyclopropane carboxylic acid lactones
作者:Z Hell
DOI:10.1016/s0040-4020(98)01109-0
日期:1999.1.29
The intramolecular cyclization of malonic acid allylic esters yields bicyclic cyclopropane carboxylic acid lactones in a phase transfer catalysed reaction. The substituents of the allylic moiety and the reaction temperature influence the diastereomeric composition of the products.