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Scientific article
German

Intramolekulare Umwandlung von syn- und anti- Tricarbonyl(1-ethoxy-1,2-dihydrocyclobutabenzol)chrom; Abfangreaktion des ortho-Chinodimethan-Intermediats

Contributors

Kundig, Ernst Peter; Bernardinelli, Gérald Hugues; Leresche, James Edward; Romanens, Patrick

Published in

Angewandte Chemie, vol. 102, no. 4, p. 421-423

Publication date

1990

Abstract

The reversible isomerization of syn-1 to anti-1 occurs without cleavage of metal-ligand bonds, as demonstrated through a [4 + 2] cycloaddition with trans-1,2-bis(trimethylsilyl)ethene as the dienophile, which led to the trapping of an ortho-quinodimethane intermediate. Further evidence comes from kinetic studies. Ring opening in 1 proceeds considerably more slowly than in the case of the non-complexed analogue, a finding that can be explained by entropy effects.

UNIGE affiliation entities

Citation (ISO format)

KUNDIG, Ernst Peter et al. Intramolekulare Umwandlung von syn- und anti- Tricarbonyl(1-ethoxy-1,2-dihydrocyclobutabenzol)chrom; Abfangreaktion des ortho-Chinodimethan-Intermediats. In: Angewandte Chemie, 1990, vol. 102, n° 4, p. 421–423. doi: 10.1002/ange.19901020419

Identifiers

Journal ISSN

0044-8249
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Technical informations

Creation

21/05/2010 16:34:00

First validation

21/05/2010 16:34:00

Update

14/03/2023 15:29:17

Status update

14/03/2023 15:29:16

Last indexation

10/06/2025 21:32:22
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