PHOTOINDUCED REACTIONS OF CR(CO)3-COORDINATED 1,3,5-CYCLOHEPTATRIENE - (6+2) CYCLOADDITION WITH AN ALKYNE AND CATALYTIC 1,6-HYDROGENATION

Date

1991-12-01

Author

FISCHLER, I
GREVELS, FW
LEITICH, J
Özkar, Saim

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Irradiation of Cr(CO)3(eta(6)-1,3,5-cycloheptatriene) (1) in the presence of bis(trimethylsilyl)ethyne results in [6 + 2] cycloaddition of the alkyne to the cycloheptatriene ligand, yielding Cr(CO)3{eta(4:2)-7,8-bis(trimethylsilyl)bicyclo[4.2.1]nona-2,4,7-triene} (2, 60% yield, PHI = 0.08), which upon oxidative decomposition with Ce(IV) releases the organic cycloadduct, 7,8-bis-(trimethylsilyl)bicyclo[4.2.1]-nona-2,4,7-triene (3). Photocatalytic hydrogenation of 1,3,5-cycloheptatriene in the presence of complex 1 affords 1,3-cycloheptadiene. This process involves 1,6-addition of hydrogen, as demonstrated by using D2.

Subject Keywords

Inorganic Chemistry

URI

https://hdl.handle.net/11511/42850

Journal

CHEMISCHE BERICHTE-RECUEIL

DOI

https://doi.org/10.1002/cber.19911241229

Collections

Department of Chemistry, Article

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Citation Formats

I. FISCHLER, F. GREVELS, J. LEITICH, and S. Özkar, “PHOTOINDUCED REACTIONS OF CR(CO)3-COORDINATED 1,3,5-CYCLOHEPTATRIENE - (6+2) CYCLOADDITION WITH AN ALKYNE AND CATALYTIC 1,6-HYDROGENATION,” CHEMISCHE BERICHTE-RECUEIL, pp. 2857–2861, 1991, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/42850.