Intramolecular cyclizations: Access to 9-oxo-4H,9H-pyrrolo[1,2-a]thieno[2,3-d]pyridine and 4-oxo-4H,9H-pyrrolo[1,2-a]thieno[2,3-d]pyridine. Synthesis of pyrrolo[1,2-a]thieno[3,2-e][1,4]diazepine and pyrrolo[1,2-a]thieno[2,3-e][1,4]diazepine

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