Optical resolution of (+/-)-1,2-Bis(2-methylphenyl)ethylene-1,2-diamine as a chiral framework for 2-iminoimidazolidine with 2-methylphenyl pendant and the guanidine-catalyzed asymmetric michael reaction of tert-butyl diphenyliminoacetate and ethyl acrylate.
作者： Akemi Ryoda , Nana Yajima , Toyokazu Haga , Takuya Kumamoto , Waka Nakanishi
DOI: 10.1021/JO701923Z
关键词: Imidazolidine 、 Imine 、 Ethyl acrylate 、 Enantioselective synthesis 、 Benzil 、 Diamine 、 Chemistry 、 Michael reaction 、 Ammonium acetate 、 Polymer chemistry 、 Organic chemistry
摘要: (±)-1,2-Bis(2-methylphenyl)ethylene-1,2-diamine, prepared from benzil and ammonium acetate, was optically resolved as a chiral framework for 2-(1-benzyl-2-hydroxyethyl)imino-1,3-dimethylimidazolidine with 2-methylphenyl pendants at the 4,5-positions. Catalysis ability of 1,3-dimethyl-4,5-bis(2-methylphenyl)imidazolidine related 1,3-dibenzyl-4,5-diphenylimidazolidine examined in asymmetric Michael reaction t-butyl diphenyliminoacetate ethyl acrylate.
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