Issue 12, 2000

An alternative general preparation of 2-alkyl-1-benzostannepines and their conversion into 1-benzostibepines and 1-benzoborepines via a tin–metal exchange

Abstract

The 2-alkyl-1-benzostannepines 4a–g were prepared by the intramolecular hydrostannation of the tin intermediates 3 to an acetylenic moiety in one pot from (Z )-1-(o-bromophenyl)but-1-en-3-ynes 1. The obtained stannepines 4 were easily converted into the 1-benzostibepines 9, 10, 11, 12 and the 1-benzoborepines 14, 15 by tin–antimony and tin–boron exchange reactions in moderate to good yields, respectively. The 1-benzoborepines 14 and 15 are hitherto unknown heterocyclic ring systems.

Supplementary files

Article information

Article type
Paper
Submitted
01 Feb 2000
Accepted
07 Apr 2000
First published
23 May 2000

J. Chem. Soc., Perkin Trans. 1, 2000, 1965-1969

An alternative general preparation of 2-alkyl-1-benzostannepines and their conversion into 1-benzostibepines and 1-benzoborepines via a tin–metal exchange

H. Sashida and A. Kuroda, J. Chem. Soc., Perkin Trans. 1, 2000, 1965 DOI: 10.1039/B000900H

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