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Paper | Regular issue | Vol 55, No. 8, 2001, pp.1487-1498
Published online, 1st January, 1970■ A Combination of Friedel-Crafts and Lawesson Reactions to 5-Substituted 2,2’-Bithiophenes
Published online, 1st January, 1970
DOI: 10.3987/COM-01-9249
■ A Combination of Friedel-Crafts and Lawesson Reactions to 5-Substituted 2,2’-Bithiophenes
M. Manuela M. Raposo* and Gilbert Kirsch
*Departamento de Química, Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal
Abstract
γ-Keto esters (2) derivatives of thiophene were obtained from hemi-succinic esters and transformed to the corresponding amides (4). Lawesson’s treatment of 2 and 4 gave the corresponding bithiophenes (5) with alkoxy or amino substituents.
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