Sulfonated charcoal, a mild and efficient reagent for the preparation of cyclic acetals, dithioacetals and benzodioxepines
作者:Haris K. Patney
DOI:10.1016/s0040-4039(00)92642-x
日期:1991.1
1,3-Dioxolanes, 1,3-Ditholanes and 1,5-dihydro-3-2,4-benzodioxepines were prepared by the direct condensation of carbonyl compounds with 1,2-ethanediol, 1,2-ethanedithiol or 1,2-benzenedimethanol under the heterogeneous conditions of sulfonated charcoal catalyst.
通过羰基化合物与1,2-
乙二醇,
1,2-乙二硫醇或1,2的直接缩合反应制得
1,3-二氧戊环,1,3-二氧
环己酮和1,5-二氢-3 -2,4-苯并二氧杂
环丁烷-苯二
甲醇在磺化木
炭催化剂的非均相条件下。