The invention relates to a process for preparing (2,3) disubstituted succinates that allows (2,3) disubstituted succinates to be obtained in good purity and with acceptable reaction yields. The (2) and (3) substitutions may be the same or different. The process comprises reacting a haloacetate with a malonic acid ester into a tricarboxylate, which is further reacted to a (2,3) disubstituted tricarboxylate, hydrolysed, decarboxylated and optionally esterified. Esterified (2,3) disubstituted succinic esters may be used as internal donor in Ziegler-Natta type catalysts for the polymerisation of olefins.
The Absolute Configulation of Dimethyl (−)-<i>erythro</i>-2-Ethyl-3-methylglutarate
作者:Shosuke Ito、Yoshimasa Hirata
DOI:10.1246/bcsj.46.672
日期:1973.2
US8889898B2
申请人:——
公开号:US8889898B2
公开(公告)日:2014-11-18
[EN] PROCESS FOR PREPARING DI-SUBSTITUTED SUCCINATES<br/>[FR] PROCÉDÉ DE PRÉPARATION DE SUCCINATES DISUBSTITUÉS
申请人:SAUDI BASIC IND CORP
公开号:WO2013029767A1
公开(公告)日:2013-03-07
The invention relates to a process for preparing (2,3) disubstituted succinates that allows (2,3) disubstituted succinates to be obtained in good purity and with acceptabel reaction yields. The (2) and (3) substitutions may be the same or different. The process comprises reacting a haloacetate with a malonic acid ester into a tricarboxylate, which is further reacted to a (2,3) disubstituted tricarboxylate, hydrolysed, decarboxylated and optionally esterified. Esterified (2,3) disubstituted succinic esters may be used as internal donor in Ziegler-Natta type catalysts for the polymerisation of olefins.
Leeuwen, F. F. van; Noordam, A.; Maat, L., Recueil des Travaux Chimiques des Pays-Bas, 1980, vol. 99, # 3, p. 96 - 99
作者:Leeuwen, F. F. van、Noordam, A.、Maat, L.、Beyerman, H. C.