Elsevier, Tetrahedron, 7(53), p. 2495-2504
DOI: 10.1016/s0040-4020(96)01196-9
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N-acyliminium cyclizations onto thiophene to give thieno[2',3':3,4]pyrrolo[2,1-a]isoindolone (2b) and benzo[a]thieno[2,3(3,2 or 3,4)-g]indolizinones (12a-c) were studied. (C) 1997, Elsevier Science Ltd.