Carbenkomplexe aus koordinierten 2-Siloxyphenylisocyaniden

DOI: 10.1016/0022-328X(93)80442-E

Source and publish data:

Journal of Organometallic Chemistry p. C11 - C14 (1993)

Update date:2022-09-26

Topics:

Authors:

Hahn, F. Ekkehardt

Tamm, Matthias

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Article abstract of DOI:10.1016/0022-328X(93)80442-E

2-Trimethylsiloxyphenylisocyanide (2) reacts with W(CO)5(THF) to give the complex .Upon hydrolysis of the Si-O bond with KF/MeOH the heterocarbene complex (benzoxazolin-2-ylidene)tungsten(pentacarbonyl) (5) is formed via intramolecular nucleophilic attack of the phenolic oxygen atom at the isocyanide carbon atom. (Benzoxazole)tungsten(pentacarbonyl) (6) is formed as a side product in this reaction.The heterocarbene complex 5 can be deprotonated and alkylated at the ring nitrogen giving (N-methylbenzoxazolin-2-ylidene)tungsten(pentacarbonyl) (7).Complexes 5, 6 and 7 were characterized by X-ray diffraction studies.

Full text of DOI:10.1016/0022-328X(93)80442-E

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