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Communication | Regular issue | Vol 45, No. 7, 1997, pp.1267-1270
Published online, 1st January, 1970
DOI: 10.3987/COM-97-7851
A Nonplanar Thiophene, 3,4-DI-tert-butyl-2,5-bis(triisopropylsilyl)thiophene

Juzo Nakayama,* Ting Yu, Yoshiaki Sugihara, Akihiko Ishii, and Shigekazu Kumakura

*Department of Chemistry, Faculty of Science, Saitama University, Saitama, Saitama 338-8570, Japan

Abstract

Treatment of 2,5-dibromo-3,4-di-tert-butylthiophene with tert-butyllithium followed by reaction with triisopropylsilyl chloride gave a highly congested thiophene, 3,4-di-tert-buty-2,5-bis(triisopropylsilyl)thiophene, whose thiophene ring is no longer planar.