Tetrahedron Letters p. 3757 - 3760 (1998)
Update date:2022-08-05
Topics:
Shinada, Tetsuro
Kawakami, Tadashi
Sakai, Hiroshi
Takada, Ichinori
Ohfune, Yasufumi
An efficient insertion reaction of α-diazoketone to various carboxylic acids was achieved by using Cu(acac)2 as a catalyst. Treatment of the diazo compound with a carboxylic acid (1.2 equiv) in the presence of Cu(acac)2 (0.1 equiv) at room temperature afforded the corresponding ketoester in good yield. Various kinds of functional groups were tolerated under the reaction conditions.
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