ZrCl4 mediated cyclization between epoxides and homopropargylic alcohols: synthesis of 4-chloro-5,6-dihydro-2H-pyran derivatives
作者:J.S. Yadav、K. Rajasekhar、M.S.R. Murty
DOI:10.1016/j.tetlet.2006.06.063
日期:2006.8
Epoxides undergo cyclization with homopropargylic alcohols in the presence of zirconiumtetrachloride under mild conditions to afford the corresponding dihydropyran derivatives in excellent yields under mild conditions.
Epoxides undergoes cyclization with homopropargylic alcohols in the presence of niobium pentachloride under mild condition to afford the corresponding dihydropyran derivatives in good yield.