Cobalt-catalysed (4+3)-annulation of oxiranes with 4-vinyl indoles: stereospecific access to fused oxepinoindoles
Abstract
A tandem C–C and C–O bond formation of oxiranes with 4-vinyl indoles has been accomplished under Co-catalysis following a base-promoted annulation to deliver fused oxepinoindole cores. The use of Co-catalysis, diastereoselectivity and chirality transfer (≥95% ee) are the important practical features.

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