Cationic bromonium complex: NBS/P(OPh)3 as an efficient catalyst for Nazarov cyclization
作者:Fenglou Guo、Limin Wang、Song Mao、Chi Zhang、Jianjun Yu、Jianwei Han
DOI:10.1016/j.tet.2012.06.107
日期:2012.9
A general, catalytic method for Nazarovcyclization of dihydropyran derivatives has been developed. Cationic bromonium complex: NBS/P(OPh)3 was identified as an efficientcatalyst for the synthesis of a number of different cyclopentenones in high yields with an excellent level of diastereocontrol.