Regioselective dehydroxytrifluoromethylthiolation of allylic and propargylic alcohols with AgSCF3
作者:Yin-Li Liu、Xiu-Hua Xu、Feng-Ling Qing
DOI:10.1016/j.tetlet.2019.02.045
日期:2019.4
reaction of easily available Morita–Baylis–Hillman (MBH) alcohols with AgSCF3 in the presence of n-Bu4NI and KI affords primary allylic SCF3 products in high yields and excellent regioselectivities. This regioselective dehydroxytrifluoromethylthiolation protocol could also be extended to propargylicalcohols for the preparation of the primary propargylic SCF3 products.
Nájera oxime-derived palladacycles catalyze intermolecular Heck reaction with Morita–Baylis–Hillman adducts. An improved and highly efficient synthesis of α-benzyl-β-ketoesters
作者:Bruno R.V. Ferreira、Rodrigo V. Pirovani、Luis G. Souza-Filho、Fernando Coelho
DOI:10.1016/j.tet.2009.06.084
日期:2009.9
An improved and highly efficient synthesis of several alpha-benzyl-beta-ketoesters from Morita-Baylis-Hillman adducts is described. These adducts were used as substrates for an intermolecular Heck reaction catalyzed by a Najera oxime-derived palladacycles. These efficient catalytic conditions probed to be very selective providing only the corresponding functionalized beta-ketoesters in high yield with no decarboxylation product. It seems that the method herein described is one of the most efficient for the synthesis of alpha-benzyl-beta-ketoesters. (C) 2009 Elsevier Ltd. All rights reserved.