Tetrahedron

Stable heteroareniumions-VIII some transformations of alkylthiophenium ions and new synthesis of 2-t-butylthiophene

LI Belen'Kii, AP Yakubov

Index: Belen'kii, L. I.; Yakubov, A. P. Tetrahedron, 1984 , vol. 40, # 13 p. 2471 - 2477

Full Text: HTML

Citation Number: 23

Abstract

The ratio of isomeric σ-complexes formed, from thiophene, t-butyl chloride and AlCl3 was found to be changed while keeping at room temperature within 1–2 days. This allows to obtain after deprotonation 2-t-butylthiophene containing only 3% of 3-isomer. Transformations of σ-complexes formed by protonation of individual 2-and 3-t- butylthiophenes in the presence of AlCl3 have been studied and there was found that ...