Rh( iii )-catalyzed [4 + 1] cyclization of aryl substituted pyrazoles with cyclopropanols via C–H activation

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]isoindoles is described. The reaction features good functional group compatibility and a broad substrate scope with respect to both cyclization components with up to 84% yields. Mechanistic studies indicated that the C-H cleavage might be the rate-determining step in this transformation.