A convenient titanium-mediated intermolecular alkyne–carbonate coupling reaction
摘要:
A direct diastereoselective titanium-mediated intermolecular coupling of internal alkynes with dialkyl carbonates under Kulinkovich-type reaction conditions is presented. The influence of the structures of the coupling partners on the yields and regioselectivities of this transformation is described. (C) 2009 Elsevier Ltd. All rights reserved.
A convenient synthesis of (E)-β-ethoxycarbonylvinylsilanes by palladium-catalysed regio- and stereo-specific hydroesterification of trimethylsilylacetylenes
作者:Ryo Takeuchi、Masaharu Sugiura、Naomi Ishii、Nobuhiro Sato
DOI:10.1039/c39920001358
日期:——
Palladium-catalysed hydroesterification of trimethylsilylacetylenes 1 gives (E)-β-ethoxycarbonylvinylsilanes 2 exclusively in excellent yields.