By-product recycling process in the production of lower alkyl 3.3-dimethyl-4-pentenoate esters
申请人:FMC Corporation
公开号:EP0019374A1
公开(公告)日:1980-11-26
3-Methyl-2-butenyl 3,3-dimethyl-4-pentenoate, which is a by-product in a condensation reaction between 3-methyl-2-butene-1-ol and a lower alkyl orthoacetate, is alkoxylated with a lower alkyl alcohol or orthoacetate in the presence of a basic ester exchange catalyst to enable it to be recycled to the condensation.
An Efficient and Solvent-Free
Synthesis of Mixed Ortho Esters
作者:Ross McGeary、Kelly Cosgrove
DOI:10.1055/s-2008-1078215
日期:——
Primary, secondary and electron-deficient tertiary alcohols react rapidly with ketene dimethyl acetal to form mixed ortho esters, without catalysts and under solvent-free conditions. 1,2-Diols yield bis(mixed ortho esters), rather than cyclic ortho esters.