1ST STRUCTURALLY CHARACTERIZED CIS ACYL CARBAMOYL COMPLEXES OF PLATINUM(II) - MODEL STUDY OF PALLADIUM-CATALYZED DOUBLE-CARBONYLATION REACTIONS

被引：28

作者：

HUANG, TM ^{[1
]}

CHEN, JT ^{[1
]}

LEE, GH ^{[1
]}

WANG, Y ^{[1
]}

机构：

[1] NATL TAIWAN UNIV,DEPT CHEM,TAIPEI 10764,TAIWAN

来源：

ORGANOMETALLICS | 1991年 / 10卷 / 01期

关键词：

D O I：

10.1021/om00047a046

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Neutral acyl carbamoyl complexes of platinum (II), cis-Pt(COPh)(CONR2)(PPh3) (R = Me (3a), Et (3b)), were prepared by nucleophilic attack of LiNMe2 and Et2NH, respectively, at the CO ligand of cis-[Pt-(COPh)(CO)(PPh3)2](BF4) (2), generated in situ by Ag+-induced CO deinsertion from trans-Pt(CO-COPh)(C1)(PPh3)2 (1). NMR data show that four methylene hydrogens in the carbamoyl ligand of 3b are diastereotopic. The single-crystal structure of complex 3b, determined by X-ray diffraction, is a distorted square plane with-angle-C1-Pt-C6 = 79.6 (5)-degrees. Such a peculiar small angle causes the distinguishing close distance (only 2.63 (2) angstrom) between the two carbonyl carbon atoms C1 and C6, which presumably facilitates reductive elimination of the acyl and carbamoyl ligands to yield the double-carbonylated alpha-keto amide.

引用

页码：175 / 179

页数：5

共 33 条

[1] CARBAMOYL AND ALKOXYCARBONYL COMPLEXES OF TRANSITION-METALS [J].