作者:Petel Miklos、Alexander Senning
DOI:10.1016/s0040-4020(01)89951-8
日期:1987.1
Oxidation of the Knoevenagel condensation products 2 of 3-oxo- tetrahydrothiophene (1) and active methylene compounds of the type Z-CH2-COOH with an H2O2/V2O5/t-BuOH reagent furnishes the corresponding sulfoxides 3 in excellent yields. The isomer distributions of the sulfides 2 and the sulfoxides 3 reflect peculiarities of hydrothiophenes as compared to similar open-chain systems and establish that
用H 2 O 2 / V 2 O 5 / t- BuOH试剂氧化3-氧代四氢噻吩(1)的Knoevenagel缩合产物2和Z-CH 2 -COOH类型的活性亚甲基化合物可提供相应的亚砜3高产。与类似的开链体系相比,硫化物2和亚砜3的异构体分布反映了氢噻吩的特殊性,并证明亚砜基团对β,γ-双键的稳定作用大于相应的如此强烈稳定的作用分组为CN和COOR。