Synthesis of new benzo[b]thieno fused ring systems via transition metal-mediated cyclisations
The compact synthesis of a new ring fused benzo[b]thieno derivative with an embedded nine-memberedring system via ring closing metathesis methodology is described. The preparation of the novel 11Hbenzo[b]thieno[2,3-c]pyrrolo[2,3-a]indol-11-one via palladium-mediated oxidative cyclisation of benzo[b]thien-2-oyl indole derivatives is also reported
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