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Note | Regular issue | Vol 57, No. 4, 2002, pp.741-747
Published online, 1st January, 1970
DOI: 10.3987/COM-02-9456
The Formation of Spiro-bridged Dimers of Cyclooctane-1,2-dicarbonyl Compounds via Domino Aldol-Cycloalkylation

Michael Oelgemöller, Keijiro Fukui, Dusan Hesek, Fumiko Aoki, Makiko Niki, and Yoshihisa Inoue*

*Inoue Phorochirogenesis Project, ERATO, JST, 4-6-3 Kamishinden, Osaka 565-0085, Japan

Abstract

Starting from the corresponding 8-membered cyclic 1,2-diones, spiro-bridged cyclic dimers were prepared in moderate to good yields via barium oxide/ hydroxide mediated coupling, followed by in situ methylation with dimethyl sulfate.