A New and Expedient Diastereoselective Synthesis of α-(Hydroxyamino)phosphonates and α-Aminophosphonates by Silyl Triflate Promoted Diethyl Phosphite Addition to Chiral N-Benzyl Nitrones
作者:Carmela De Risi、Daniela Perrone、Alessandro Dondoni、Gian Piero Pollini、Valerio Bertolasi
DOI:10.1002/ejoc.200200698
日期:2003.5
efficient methodology for the synthesis of α-aminophosphonates has been developed taking advantage of the tert-butyldimethylsilyl triflate activated addition of diethyl phosphite to N-benzyl nitrones derived from chiral α-alkoxy and α-(Boc-amino) aldehydes. The stereoselective carbon− phosphorus bond-forming reaction proceeded smoothly to give α-(hydroxyamino)phosphonate intermediates as the primary
已经开发了一种合成 α-氨基膦酸酯的有效方法,利用叔丁基二甲基甲硅烷基三氟甲磺酸酯活化亚磷酸二乙酯与衍生自手性 α-烷氧基和 α-(Boc-氨基)醛的 N-苄基硝酮的加成。立体选择性碳-磷键形成反应顺利进行,得到 α-(羟基氨基)膦酸酯中间体作为主要加合物,随后通过常规还原方法将其转化为相应的多羟基化 α-氨基-和 α,β-二氨基膦酸酯。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)