Chloromethyl(dimethyl)sulfonium Trifluoromethanesulfonate - The Reagent for Preparation of Acetals of 2-Hydroxyaldehydes from Ketones under Basic Conditions
Chloromethyl(dimethyl)sulfonium Trifluoromethanesulfonate - The Reagent for Preparation of Acetals of 2-Hydroxyaldehydes from Ketones under Basic Conditions
Novel methods for synthesizing 2-chloroaldehyde from carbonyl compounds and converting it into 2-hydroxyaldehyde derivatives
作者:Ken-ichi Sato、Takao Sekiguchi、Shoji Akai
DOI:10.1016/s0040-4039(01)00522-6
日期:2001.5
2-Chloroaldehyde derivatives were synthesized from carbonylcompounds with [chloromethyl (dimethyl)sulfonium trifluoromethanesulfonate, (1)] and DBU in THF in good yields. Further, 2-chloroaldehyde derivatives were converted into the corresponding 2-hydroxyaldehydes by treating the derivatives with n-Bu4NOH in good yields with the inverted configuration. The stereochemistry of all the products were
由羰基化合物与[氯甲基(二甲基)ulf三氟甲烷磺酸盐(1)]和DBU在THF中以高收率合成了2-氯醛衍生物。此外,通过用n- Bu 4 NOH以高产率和反相构型处理衍生物,将2-氯醛衍生物转化为相应的2-羟基醛。所有产物的立体化学通过NMR(NOE)测定。