Asymmetric Cyanation of α-Ketiminophosphonates Catalyzed by<i>Cinchona</i>Alkaloids: Enantioselective Synthesis of Tetrasubstituted α-Aminophosphonic Acid Derivatives from Trisubstituted α-Aminophosphonates
作者:Javier Vicario、José María Ezpeleta、Francisco Palacios
DOI:10.1002/adsc.201200516
日期:2012.10.8
An enantioselective synthesis of tetrasubstituted α-phosphono-α-amino nitriles through asymmetric cyanation of α-ketiminophosphonates catalyzed by Cinchona alkaloids is reported. α-Ketiminophosphonates are generated, in a very efficient synthetic protocol, by oxidation of trisubstituted α-aminophosphonates.
据报道,金鸡纳生物碱催化α-酮亚氨基膦酸酯的不对称氰化,对映选择性地合成了四取代的α-膦酰基-α-氨基腈。在非常有效的合成方案中,α-酮亚氨基膦酸酯是通过三取代的α-氨基膦酸酯的氧化而生成的。