Issue 11, 2000

[2 + 2] Cycloaddition of cyclic vinyl phosphonates with ketenes

Abstract

Highly substituted cyclic β-alkoxyvinyl phosphonates underwent thermal [2+2] cycloaddition with activated ketenes to afford bicyclic phosphonates. Fragmentation of the central polarized bond of this bicyclic system occurred readily upon treatment with zinc in acetic acid, to give rise to ring expanded products. This method provides access to cycloheptane-1,3-diones substituted at the 4-position with a phosphonate group.

Article information

Article type
Paper
Submitted
24 Dec 1999
Accepted
28 Mar 2000
First published
17 May 2000

J. Chem. Soc., Perkin Trans. 1, 2000, 1771-1776

[2 + 2] Cycloaddition of cyclic vinyl phosphonates with ketenes

S. M. Ruder and M. Ding, J. Chem. Soc., Perkin Trans. 1, 2000, 1771 DOI: 10.1039/B000014K

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