The present invention provides a method of preparing 1-acetyl-1-chlorocyclopropane from 1,3-dichloro-2-pentanone by reaction with base in the presence of a phase transfer catalyst. The reaction may be run in the presence of an organic solvent and in a continuous or batch process.
Solvent-free preparation of α,α-dichloroketones with sulfuryl chloride
作者:Dewei Tu、Juan Luo、Wengao Jiang、Qiang Tang
DOI:10.1016/j.tetlet.2021.153335
日期:2021.9
An efficient and facile method is reported for the synthesis of a series of α,α-dichloroketones. The direct dichlorination of methyl ketones and 1,3-dicarbonyls using an excess amount of sulfuryl chloride affords the corresponding -dichloro compounds in moderate to excellent yields. Moreover, the protocol features high yields, broad substrate scope, and simple reaction conditions without using any