Abstract
A series of new 3-benzyl-1,10-diaryl-4 H,10 H-thieno[3,4- c][1,5]benzothiazepines has been synthesised regioselectively from the reaction of 5-aryl-2,4-bis(arylmethylidene)dihydro-3-thiophenones with o-aminothiophenol in the presence of acetic acid. This transformation presumably occurs via a tandem Michael addition–condensation–isomerisation sequence.
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