O-arylative Passerini reactions.
The three-component addition of isocyanides to phenol derivatives and aldehydes proceeds easily in methanol to form O-arylated compounds in a new Passerini-type reaction. The key step of the conversion lies in an irreversible Smiles rearrangement of intermediate phenoxyimidate adducts. It represents the first use of a Smiles rearrangement in a Passerini reaction. [reaction: see text]
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