novel semipinacol rearrangement using dibromocyclopropanes as sources of carbocations was developed. Heating dibromocyclopropanes bearing a 1‐hydroxyalkyl group with silver perchlorate and 2,6‐lutidine induced cleavage of the cyclopropane ring to form allyl cations, which underwent 1,2‐shift of a substituent at the α‐position of the hydroxygroup to give β,γ‐unsaturated carbonylcompounds having a quaternary
Kinetic Resolution of Aryl Alkenylcarbinols Catalyzed by Fc-PIP
作者:Bin Hu、Meng Meng、Shanshan Jiang、Weiping Deng
DOI:10.1002/cjoc.201200410
日期:2012.6
An effective kineticresolution of a variety of arylalkenylcarbinolscatalyzed by nonenzymatic acyl transfer catalyst Fc‐PIP was developed, affording corresponding unreacted alcohols in good to excellent ee value up to 99% and with selectivity factors up to 24.