Author/Authors :
Kato، نويسنده , , Keisuke and Mochida، نويسنده , , Tomoyuki and Takayama، نويسنده , , Hiroyuki and Kimura، نويسنده , , Masayuki and Moriyama، نويسنده , , Hiroshi and Takeshita، نويسنده , , Akihito and Kanno، نويسنده , , Yuichro and Inouye، نويسنده , , Yoshio and Akita، نويسنده , , Hiroyuki، نويسنده ,
Abstract :
Palladium(II) catalyzed carbonylation of 1,2-allenyl ketones 1 in the presence of p-benzoquinone (1 equiv) under a CO atmosphere (balloon) afforded difuranylketones 4 in moderate to good yields. Mechanistically, the electron-withdrawing nature of the acyl group should enhance the electrophilicity of the acylpalladium species B, and thus promote the oxypalladation of an additional molecule of 1, leading to the difuranyl ketone 4.
