Chemistry of silylketenes: Simple preparation of silylallenes by the reaction of silylketenes with phosphorus ylides

DOI: 10.1248/cpb.42.233

Source and publish data:

Chemical and Pharmaceutical Bulletin p. 233 - 236 (1994)

Update date:2022-08-03

Topics:

Authors:

Kita Kita

Tsuzuki Tsuzuki

Kitagaki

Akai Akai

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Article abstract of DOI:10.1248/cpb.42.233

Reaction of silylketenes 1a, b with stabilized ylides 2a-e readily gave silylallenes 3a-f in high yields. However, similar reaction of 1a with the less stable ylides 2f, g resulted in low yields of the allenes 3g, h. Use of silylketenes 5a, c with an additional trimethylsilyl group overcame this problem to give silylallenes 3c, g-k directly in considerable to good yields. In this reaction, the additional trimethylsilyl group apparently worked as a masking group.

Full text of DOI:10.1248/cpb.42.233

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