MECHANISTIC STUDY OF ACETYLENE CARBONYLATION TO ANHYDRIDES OF DICARBOXYLIC-ACIDS IN SOLUTIONS OF PALLADIUM COMPLEXES

被引：37

作者：

BRUK, LG ^{[1
]}

OSHANINA, IV ^{[1
]}

KOZLOVA, AP ^{[1
]}

VORONTSOV, EV ^{[1
]}

TEMKIN, ON ^{[1
]}

机构：

[1] LOMONOSOV ACAD FINE CHEM TECHNOL,MOSCOW 117571,RUSSIA

来源：

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 1995年 / 104卷 / 01期

基金：

俄罗斯基础研究基金会;

关键词：

ACETYLENE; CARBONYLATION; MALEIC ANHYDRIDE; PALLADIUM; SUCCINIC ANHYDRIDE;

D O I：

10.1016/1381-1169(96)00108-2

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The mechanism of the reaction that produces maleic and succinic anhydrides from carbon monoxide and acetylene was studied in the catalytic PdBr2-LiBr-CH3CN system. The in situ study of reactivities of possible organic intermediates, the kinetic isotope effect study (for succinic and maleic anhydrides k(H)/k(D) was estimated to be 1.05 +/- 0.05 and 0.9 +/- 0.1, respectively), the study of isotope exchange, and the oxygen effect on the process direction, revealed that maleic anhydride is most likely a key intermediate of the succinic anhydride formation. Maleic anhydride undergoes transformations through the mediation of a palladium hydride complex. This complex was detected in the catalytic solution at -40 degrees C with H-1 NMR (delta= -1.88 ppm, nu(1/2) = 70 Hz).

引用

页码：9 / 16

页数：8

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