Zirconium(IV) Compounds As Efficient Catalysts for Synthesis of α-Aminophosphonates
作者:Srikant Bhagat、Asit K. Chakraborti
DOI:10.1021/jo8009006
日期:2008.8.1
Zirconium(IV) compounds are reported as excellent catalysts for a three-component one-pot reaction of an amine, an aldehyde or a ketone, and a di/trialkyl/aryl phosphite to form α-aminophosphonates under solvent-free conditions at rt. Among the various zirconiumcompounds, ZrOCl2·8H2O and ZrO(ClO4)2·6H2O were most effective. The reactions were faster with dialkyl/diaryl phosphites than with trialkyl/triaryl
α-Aminophosphonates as novel anti-leishmanial chemotypes: synthesis, biological evaluation, and CoMFA studies
作者:Srikant Bhagat、Parth Shah、Sanjeev K. Garg、Shweta Mishra、Preet Kamal Kaur、Sushma Singh、Asit K. Chakraborti
DOI:10.1039/c3md00388d
日期:——
α-Aminophosphonates have been identified as novel anti-leishmanial chemotypes against theL. donovanipromastigote with low μM range activity.
α-氨基膦酸酯已被确定为针对L. donovani原虫具有低微米范围活性的新型抗利什曼病化合物。
A highly efficient, one-pot synthesis of α-aminophosphonates over CuO nanopowder
作者:Bikash Karmakar、Sanjay Paul、Julie Banerji
DOI:10.3998/ark.5550190.0012.213
日期:——
An atom-efficient, one-pot, three-component synthetic methodology has been developed for the preparation of α-aminophosphonates using the crystalline CuO- nanopowder as catalyst in solvent-free and ambient conditions, for the first time. The reaction involves the use of carbonyl compounds, amines and trimethyl phosphite. A wide range of substrates is compatible in this reaction, producing excellent
various instrumental methods. Sulfated zirconia supported on magnetic nanoparticles can act as a well-organized nanocatalyst and can be easily separated from the reaction mixture using an external magnetic field. Nano-Fe3O4@ZrO2/SO42− is a heterogeneous acidic catalyst and has particular advantages such as a facile synthesis procedure, high activity, easy separation and reusability. It was applied
在该项目中,使用各种仪器方法制备并表征了纳米磁性硫酸盐氧化锆Fe 3 O 4 @ZrO 2 / SO 4 2-。负载在磁性纳米颗粒上的硫酸氧化锆可以充当组织良好的纳米催化剂,并且可以使用外部磁场轻松地从反应混合物中分离出来。纳米Fe 3 O 4 @ZrO 2 / SO 4 2−是一种非均相酸性催化剂,具有特殊的优点,例如合成过程简单,活性高,易于分离和可重复使用。它被用作Kabachnik-Fields反应中合成α-氨基膦酸酯衍生物的有效纳米催化剂。该合成方法具有许多优点,包括高产率,短反应时间,易于后处理和对环境无害的反应条件。