A method for the preparation of cyclopropyl carbinols by cyclopropanation of unsaturated alcoholates, utilising a reagent system selected from (A) magnesium metal and dibromomethane, and (B) dibromomethane and a tertiary Grignard reagent, the reaction being carried out in the presence of an ether solvent.
The process is useful, for example, for the preparation of ingredients for the flavour and fragrance industry.
[EN] CYCLOPROPANATION PROCESS<br/>[FR] PROCÉDÉ DE CYCLOPROPANATION
申请人:GIVAUDAN SA
公开号:WO2009023980A1
公开(公告)日:2009-02-26
A method for the preparation of cyclopropyl carbinols by cyclopropanation of unsaturated alcoholates, utilising a reagent system selected from (A) magnesium metal and dibromomethane, and (B) dibromomethane and a tertiary Grignard reagent, the reaction being carried out in the presence of an ether solvent. The process is useful, for example, for the preparation of ingredients for the flavour and fragrance industry.