Chemistry Letters p. 1931 - 1934 (1984)
Update date:2022-08-02
Topics:
Setsune, Jun-ichiro
Ueda, Takashi
Matsukawa, Kimihiro
Kitao, Teijiro
The reaction of o-(allyloxy)bromobenzenes with copper(I) diethyl malonate afforded diethyl o-(allyloxy)phenylmalonates which under the reaction conditions cyclized to give 4,4-bis(ethoxycarbonyl)-3-methylchromans, 4,4-bis(ethoxycarbonyl)-3-methylenechromans, and 3-(3-butenyl)-4,4-bis(ethoxycarbonyl)chromans.
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