Iron-Catalyzed Cascade Arene−Aldehyde Addition/Cyclizations for the Highly Efficient Synthesis of Xanthenes and Its Analogous: Observation of a C−C Bond Cleavage in Indole-Based Triarylmethanes
2009-09-04T00:00:00Z (GMT) by
An efficient, general, and one-pot procedure for the synthesis of multisubstituted xanthene derivatives through Fe(III)-catalyzed reactions of 2-aryloxybenzaldehydes with electron-rich arenes has been developed. This method offers several advantages such as high selectivities, mild reaction conditions, and easily accessible starting materials. A mechanistic study revealed that a C−C bond cleavage of a triarylmethane intermediate might be involved in the domino process.
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