作者:Ernest Wenkert、Song Liu
DOI:10.1055/s-1992-26101
日期:——
Diazomethyl ketones, prepared from Diels-Alder adducts of methyl oxindolylideneacetic acid ester (methyl 2-oxo-3(2H)-indolylideneacetate) and 1,3-butadiene as well as 1,3-cyclohexadiene by standard means, were decomposed over dirhodium tetraacetate, in the hope of carbon-hydrogen insertion leading to cyclopentanone formation. However, in every case studied the diazo ketone underwent interaction with the neighboring benzene ring, resulting in the creation of a norcaradiene.
重氮酮是通过标准方法从氧杂吲哚亚基乙酸甲酯(2-氧代-3(2H)-吲哚亚基乙酸甲酯)和 1,3-丁二烯以及 1,3-环己二烯的 Diels-Alder 加合物中制备出来的。然而,在研究的每种情况下,重氮酮都会与邻近的苯环发生作用,从而生成一种去甲卡二烯。