ORGANIC SYNTHESES WITH TRANSITION-METAL COMPLEXES .52. N-VINYLAMINOCARBENE AND N-(2-PROPENYL)AMINOCARBENE COMPLEXES BY ADDITION OF KETENE IMINES TO CARBENE IRON COMPLEXES

被引：7

作者：

AUMANN, R ^{[1
]}

TRENTMANN, B ^{[1
]}

DARTMANN, M ^{[1
]}

KREBS, B ^{[1
]}

机构：

[1] UNIV MUNSTER,INST ANORGAN CHEM,W-4400 MUNSTER,GERMANY

来源：

CHEMISCHE BERICHTE | 1991年 / 124卷 / 08期

关键词：

AMINOCARBENE COMPLEXES OF IRON; N-VINYLAMINOCARBENE COMPLEXES; PI-ALLYL; SIGMA-COMPLEXES OF IRON; N-(2-PROPENYL)AMINOCARBENE COMPLEXES; METHYLENATION OF KETENE IMINES BY CARBENE COMPLEXES;

D O I：

10.1002/cber.19911240816

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Ketene imines R(Me)C = C = NPh (2, R = Me, Et, i-Pr) form 1:1 adducts with the carbene iron complex (CO)4Fe = C(OEt)Ph (1). The initial step of the reaction involves an attack of the nitrogen atom of 2 at the carbene carbon atom of 1 and a subsequent rearrangement to give N-vinylaminocarbene complexes (E/Z)-4. In a parallel process with different regiochemistry the central carbon of the CCN unit is attached to the carbene carbon to yield pi-allyl, sigma-complexes (E/Z)-3. Alkylation of 3a with [Et3O]BF4 leads to the formation of a cationic N-(2-propenyl)-aminocarbene complex 6a. Protonation of 4 with trifluoroacetic acid results in a ring contraction to give the four-membered metallacycles 7. X-ray data are reported for prototypes (Z)-4c and 6a.

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页码：1795 / 1803

页数：9

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