Process for synthetizing paraffinic diols and triols possessing a vicinal diol group

摘要

Preparation of vicinal alkane- diols/triols (I) comprises: (a) conversion of corresponding 4-20C monoolefine with hydrogen peroxide and formic acid in the presence of water; (b) distillation of water and formic acid from the obtained mixture; (c) conversion of the obtained mixture with 1-4C alcohol in the presence of arylsulfonic acid; and (d) distillation of the obtained formic acidester with available alcohol of the reaction mixture. Preparation of vicinal alkanediols or alkanetriols (I) comprises: (a) conversion of corresponding 4-20C monoolefin with hydrogen peroxide and formic acid in the presence of water or (a1) conversion of corresponding 4-20C monoolefin alcohols in a first step with formic acid and the obtained reaction product in a second step with hydrogen peroxide in the presence of water; (b) distillation of water and formic acid from the obtained mixture; (c) conversion of the obtained mixture with at least an aliphatic 1-4C alcohol in the presence of at least an arylsulfonic acid (i) of formula (R nAr-SO 3H) or at least 6-16C alkylsulfonic acid; and (d) distillation of the obtained formic acid ester together with available alcohol of the reaction mixture, where the steps (c) and (d) are carried out simultaneously or after each other. R : 1-19C alkyl, F or Cl; Ar : phenyl-, naphthyl-, anthryl- or phenanthryl; and n : 0-3.