Rhodium(II) acetate catalyzed reactions of various substituted 3-diazopiperidin-2-ones with a range of aromatic amines, indoles, and benzotriazole yield exclusively the corresponding N–H insertion products despite competing C-H or O-H insertions. This strategy provides an example of a facile chemoselective N–H insertion reaction delivering a library of 3-arylamino and 3-heteroarylpiperidin-2-one derivatives
Rhodium(II) catalyzed carbenoid reactions of 3-diazopiperidin-2-ones were carried out with indoles and pyrroles to afford the respective (3-indol-3-yl)- and (3-pyrrol-2-yl)piperidones with regioselectivity. Interestingly, the reaction of bis-diazoimide in the presence of Rh2(OAc)4 catalyst furnished diazacyclopenta[a]phenalenone in a tandem manner.
用吲哚和吡咯进行3-重氮哌啶-2-酮的铑(II)催化的类胡萝卜素反应,得到具有区域选择性的相应的(3-吲哚-3-基)-和(3-吡咯-2-基)哌啶酮。有趣的是,双重氮酰亚胺在Rh 2(OAc)4催化剂存在下的反应以串联方式提供了二氮杂环戊达[ a ]苯丙烯酮。