Shimizu Makoto, Mushika Miki, Mizota Isao, Zhu Yusong
School of Energy Science and Engineering, Nanjing Tech University Nanjing 211816 Jiangsu Province China.
Department of Chemistry for Materials, Graduate School of Engineering, Mie University Tsu Mie 514-8507 Japan
RSC Adv. 2019 Jul 29;9(40):23400-23407. doi: 10.1039/c9ra04889h. eCollection 2019 Jul 23.
Alkylation of iminomalonate with Grignard reagents followed by oxidation and allylation gave symmetrical quaternary α-amino diesters in good yields. Subsequent desymmetrization of a diol derivative from these products was conducted asymmetric carbamylation catalyzed by Cu-Bnbox to give chiral quaternary aminodiol mono-carbamates.
亚氨基丙二酸酯与格氏试剂进行烷基化反应,随后进行氧化和烯丙基化反应,以良好的产率得到对称的季铵化α-氨基二酯。随后,通过Cu-Bnbox催化的不对称氨基甲酰化反应对这些产物中的二醇衍生物进行去对称化,得到手性季铵化氨基二醇单氨基甲酸酯。