New and improved processes for the production of 1,1-disubstituted ethylenes.
生产1,1-二取代乙烯的新改进工艺。
[EN] IMPROVED METHYLIDENE MALONATE PROCESS<br/>[FR] PROCÉDÉ DE PRODUCTION AMÉLIORÉ DE MALONATES DE MÉTHYLYDÈNE
申请人:OPTMED INC
公开号:WO2010129066A1
公开(公告)日:2010-11-11
Novel improved processes for the production and isolation of methylidene malonates via direct and indirect adduct processes.
小说改进了通过直接和间接加成过程生产和分离甲基亚甲基丙二酸酯的工艺。
1,1-disubstituted ethylene process
申请人:OptMed, Inc.
公开号:US10597355B2
公开(公告)日:2020-03-24
Improved iminium based processes for the production of cyanoacrylates and methylidene malonates wherein the improvement pertains to the presence of acid chlorides and/or acid anhydrides in the reaction mix.