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.