Electrophilic addition to o-ArY-substituted phenylalkynes. A highly selective cyclization controlled by heteroatoms

DOI: 10.1016/S0040-4039(00)70720-9

Source and publish data:

Tetrahedron Letters p. 7445 - 7446 (1989)

Update date:2022-08-04

Topics:

Authors:

Kitamura

Takachi Takachi

Kawasato

Kobayashi

Taniguchi

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Article abstract of DOI:10.1016/S0040-4039(00)70720-9

Treatment of o-(phenyloxy)phenylalkyne 1 with HC10₄ or HBF₄ gave dibenz [b, f]oxepin 2, whereas the sulfur analogue, o-(phenylthio)phenyl-alkyne 3, provided 1-phenyl 1-1-benzothiophenium salts 4.

Full text of DOI:10.1016/S0040-4039(00)70720-9

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