Boron Trihalide Mediated Substitution of Hydroxyl Groups with Alkenyl, Alkynyl, and Allyl Moieties
作者:George Kabalka、Scott Borella、Min-Liang Yao
DOI:10.1055/s-2007-990816
日期:2008.1
The coupling of alcohols with alkenyl- and alkynylboron dihalides with high olefin stereoselectivity is described. The reaction provides a facile route to internal acetylenes. Notably, the allylation of propargylic alcohols mediated by borontrichloride proceeds smoothly at room temperature and gives excellent regioselectivity.