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Communication | Regular issue | Vol 14, No. 1, 1980, pp.29-32
Published online, 1st January, 1970
DOI: 10.3987/R-1980-01-0029
Syntheses and Reactions of Cyclopentadienones Possessing Five-membered Heterocycles as Substituents

Yoshiro Yamashita and Mituo Masumura*

*Department of Applied Chemistry, Faculty of Engineering, University of Tokushima, Minamijosanjima-cho, Tokushima 770-8506, Japan

Abstract

The syntheses and reactions of 3,4-di(2-furyl)-2,5-dimethylcyclopentadienone (1a) and 2,5-dimethyl-3,4-di(2-thienyl)-cyclopentadienone (1b) are described. They exist as dimers 3a,b at room temperature, while upon heating in solvents, the dimers become monomeric and undergo the Diels-Alder reaction with olefins.