A simple and efficient synthesis of α-aminophosphonates has been developed via the one-pot three-component reactions of aldehydes, amines, and trialkyl phosphites. The reactions occurred rapidly at room temperature in the presence of 1 equiv of propylphosphonic anhydride (T3P®) as the condensing agent, and the α-aminophosphonate products were obtained in high yields.
Direct Aminophosphonylation of aldehydes catalyzed by cyclopentadienyl ruthenium(II) complexes
作者:Ivânia R. Cabrita、Sara C.A. Sousa、Pedro R. Florindo、Ana C. Fernandes
DOI:10.1016/j.tet.2018.02.047
日期:2018.4
This work reports a novel method for the direct aminophosphonylation of aldehydes catalyzed by cyclopentadienyl ruthenium(II) complexes. The system HP(O)(OEt)2/[CpRu(PPh3)2Cl] was very efficient for the aminophosphonylation of aldehydes with primary and secondary amines, producing the corresponding α-aminophosphonates in good to excellent yields. This novel method has several advantages including the
Amberlite-IR 120 catalyzed three-component synthesis of α-amino phosphonates in one-pot
作者:Asish K. Bhattacharya、Kalpeshkumar C. Rana
DOI:10.1016/j.tetlet.2008.02.102
日期:2008.4
A simple, efficient, and environmentally benign method for a three-component reaction of an amine, an aldehyde or a ketone, and diethyl phosphite catalyzed by Amberlite-IR 120 resin has been developed to afford α-amino phosphonates in high yields and short reaction times under solvent-free reaction conditions. The major advantages of the present method are good yields, inexpensive, ecofriendly and
Silica supported polyphosphoric acid (PPA-SiO_2): an efficient and reusable heterogeneous catalyst for the one-pot synthesis of \alpha -amino phosphonates
An efficient green protocol is described for the preparation of \alpha -amino phosphonates, employing a one-pot three-component condensation reaction between aldehydes, amines, and trialkyl phosphites in the presence of PPA-SiO_2 under solvent-free conditions at 80 °C. The present procedure offer advantages such as high to excellent yields, short reaction time, inexpensiveness, recovery, and reusability of catalyst.
在 80 °C 无溶剂条件下,在 PPA-SiO_2 存在下,采用醛、胺和三烷基膦酸盐之间的单锅三组分缩合反应,描述了制备 \alpha -氨基膦酸盐的高效绿色方案。本方法具有产率高、反应时间短、无毒、可回收和催化剂可重复使用等优点。