Tetrahydrofuran Ring-opening with Acyloxyphosphonium Bromide Catalyzed by Zinc Bromide: An Effective Method for the Preparation of 4-Bromobutyl Esters

Catalyzed by zinc bromide, tetrahydrofuran ring can be opened with acyloxyphos- phonium bromide generated in situ to afford 4-bromobutyl esters under mild conditions in good to excellent yields.

二醋酸碘苯在碘和三苯基膦作用下酰化醇、酚和胺

二醋酸碘苯与碘在三苯基膦作用下形成的乙酰氧鏻中间体在三乙胺的催化下与醇、酚、胺一锅法反应以中等和高产率得到酯和酰胺.