Domino 1,4- and 1,6-Addition Reactions of Ketene Silyl Acetals to Dialkynyl Imines Promoted by Aluminum Chloride: Synthesis of Multifunctionalized β-Lactams
作者:Iwao Hachiya、Kenta Nakamura、Masaya Hara、Koki Sato、Makoto Shimizu
DOI:10.1021/acs.joc.9b02364
日期:2019.11.15
Domino 1,4- and 1,6-addition reactions of ketene silyl acetals to dialkynyl imines are disclosed. Aluminum chloride promoted domino 1,4- and 1,6-addition reactions of ketene silyl acetals to dialkynyl imines to give a variety of alkenyl iminocyclobutenones in moderate to good yields. The chemoselective reduction of alkenyl iminocyclobutenones and the subsequent thermal rearrangement of resulting alkenyl
公开了烯酮甲硅烷基乙缩醛与二炔基亚胺的多米诺1,4-和1,6-加成反应。氯化铝促进了烯酮甲硅烷基缩醛与二炔基亚胺的多米诺骨牌1,4-和1,6-加成反应,以中等至良好的收率得到了各种烯基亚氨基环丁烯酮。烯基亚氨基环丁烯酮的化学选择性还原以及随后在合适的胺存在下所得烯基氨基环丁烯酮的热重排以中等至高收率提供了具有良好或高非对映选择性的顺式或反式多官能化β-内酰胺。