Tetrahedron Letters p. 4055 - 4058 (1993)
Update date:2022-08-17
Topics:
Kitamura, Tsugio
Zheng, Lei
Taniguchi, Hiroshi
Sakurai, Makoto
Tanaka, Ryuichi
Reaction of alkynyl(p-phenylene)bisiodonium ditriflates (2) with sodium phenoxide in methanol provides 2-substituted benzofurans (3). This result indicates that β-phenoxyalkylidenecarbenes generated by the reaction with phenoxide anion undergo novel intramolecular aromatic C-H insertion to afford benzofurans.
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