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
| Autor: | Kentaro Yamaguchi, Nana Yajima, Takuya Kumamoto, Akemi Ryoda, Waka Nakanishi, Tsutomu Ishikawa, Masatoshi Kawahata, Toyokazu Haga |
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| Rok vydání: | 2007 |
| Předmět: |
Models
Molecular Molecular Structure Chemistry Organic Chemistry Imine Enantioselective synthesis Stereoisomerism Acetates Crystallography X-Ray Ethylenediamines Imidazolidines Catalysis chemistry.chemical_compound Acrylates Imidazolidine Diamine Polymer chemistry Michael reaction Ethyl acrylate Organic chemistry Benzil Imines Ammonium acetate Guanidine |
| Zdroj: | The Journal of organic chemistry. 73(1) |
| ISSN: | 0022-3263 |
| Popis: | (+/-)-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 the 1,3-dimethyl-4,5-bis(2-methylphenyl)imidazolidine and the related 1,3-dibenzyl-4,5-diphenylimidazolidine was examined in the asymmetric Michael reaction of t-butyl diphenyliminoacetate and ethyl acrylate. |
| Databáze: | OpenAIRE |
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