The use of BrCCl3-PPh3 in Appel type transformations to esters, O-acyloximes, amides, and acid anhydrides
作者:Mariam Al-Azani、Mazen al-Sulaibi、Nuha al Soom、Yosef Al Jasem、Bernhard Bugenhagen、Bassam Al Hindawi、Thies Thiemann
DOI:10.1016/j.crci.2016.04.004
日期:2016.8
Abstract Esters, acyloximes, amides and acid anhydrides have been prepared from the respective carboxylic acids, oximes, amines and alcohols by the use of the reagent combination BrCCl3-PPh3. The reactions obviate the handling acyl halides or more aggressive reagents PCl3, POCl3, or SOCl2. Furthermore, the environmentally hazardous CCl4 used in Appel-type reactions is replaced with BrCCl3, a reagent