Manganese-Catalyzed Aromatic C–H Allylation of Ketones
作者:Shaukat Ali、Jiaqi Huo、Congyang Wang
DOI:10.1021/acs.orglett.9b02554
日期:2019.9.6
Manganese-catalyzed aromatic C-H allylation of ketones is reported. The reaction proceeded in a monoselective allylation manner to provide various ortho C-H allylated ketones in high yields. With challenging allylic electrophiles bearing substituents at the α-, β-, or γ-position, excellent SN2' regioselectivity was achieved under mild conditions (rt to 35 °C). Mechanistic studies revealed a possible
Formation of dihydroxyselenides from allylic alcohols and their conversion to β-hydroxy epoxides via substitution of a phenylselenonyl group
作者:Matthew A. Cooper、A.David Ward
DOI:10.1016/j.tet.2004.05.084
日期:2004.8
readily converted to β-hydroxy epoxides in good yields via oxidation with m-chloroperbenzoic acid to a selenone and subsequent treatment with base. Hydroxyselenation of crotyl acetate and 3-acetoxycyclohexene is more regiocatholic than hydroxyselenation of the corresponding allylic alcohols. It appears that the known selectivity of additions of phenylselanyl chloride to these acetates in organic solvents