Ferrier Rearrangement of 1,2-Dihydropyrans with Organozinc Species in Toluene/n-Dibutyl Ether
作者:Simon Wagschal、Sébastien Lemaire、Pauline Rabet
DOI:10.1055/s-0036-1588485
日期:2017.10
Herein, we report the catalyst-free addition of organozinc species to glycalderivatives and dihydropyrans in a toluene/ n -dibutyl ether solvent mixture via a Ferrier rearrangement at room temperature. This methodology requires only a slight excess of the nucleophile and leads preferentially to the C-glycoside α-anomer. Various 1,2-dihydropyrans were assessed with a range of nucleophiles (aryl, alkynyl