Synthesis of Strained 1,3-Diene Macrocycles via Copper-Mediated Castro–Stephens Coupling/Alkyne Reduction Tandem Reactions
作者:Wei Li、Christopher M. Schneider、Gunda I. Georg
DOI:10.1021/acs.orglett.5b01892
日期:2015.8.7
A copper-mediated macrocyclization involving the reaction of a vinyl iodide and a terminal alkyne followed by an in situ reduction of the enyne intermediate is reported. The reaction generates a conjugated Z-double bond within a strained medium-size lactone, lactam, or ether macrocycle. A variety of macrocyclic compounds bearing different ring sizes and functionalities were synthesized. A complementary stepwise procedure was also developed for less strained ring systems.