Nucleophilic Carbene-Mediated Hydrophosphonylation of Aldimines
作者:Guang-Fen Du、Lin He、Zhi-Hua Cai、Bin Dai
DOI:10.1055/s-0031-1289690
日期:2012.3
Aldimines undergo efficient hydrophosphonylation reactions with dimethyl phosphite in the presence of nucleophilic heterocyclic carbenes (NHCs) as organocatalysts to give the corresponding (α-aminoalkyl)phosphonates in moderate-to-excellent yields.
Hydrophosphonylation of Aldimines under Catalysts‐Free Conditions
作者:Zhihua Cai、Yecheng Fan、Guangfen Du、Lin He
DOI:10.1002/cjoc.201200119
日期:2012.7
Trimethylsilyl phosphite reacted with aldimines efficiently undercatalysts‐freeconditions, giving α‐aminophosphonates in good to excellent yields. Furthermore, the reaction can be scaled‐up easily and the high yield can be maintained.
Synthesis of Tetrasubstituted Phosphorus Analogs of Aspartic Acid as Antiproliferative Agents
作者:Xabier del Corte、Aitor Maestro、Adrián López-Francés、Francisco Palacios、Javier Vicario
DOI:10.3390/molecules27228024
日期:——
An efficient general method for the synthesis of a wide family of α-aminophosphonate analogs of aspartic acid bearing tetrasubstituted carbons is reported through an aza-Reformatsky reaction of α-iminophosphonates, generated from α-aminophosphonates, in an umpolung process. In addition, the α-aminophosphonate substrates showed in vitro cytotoxicity, inhibiting the growth of carcinoma human tumor cell
Treatment of N-tosyl aldimines with dialkyl trimethylsilyl phosphites at 0 degrees C in the presence of iodine as a catalyst afforded the corresponding sulfonamide phosphonates in excellent yields within 1.5 to 2.5 h.
Amberlyst-15–Catalyzed Facile Synthesis of <font>α</font>-Amino Phosphonates
[image omitted] A simple and efficient method has been developed for the synthesis of sulfonamide phosphonates from N-tosyl aldimines and dimethyl trimethylsilyl phosphite at 0 degrees C in the presence of Amberlyst-15 as a heterogeneous catalyst.