262849-00-3Relevant academic research and scientific papers
TiO2 as a new and reusable catalyst for one-pot three-component syntheses of α-aminophosphonates in solvent-free conditions
Hosseini-Sarvari, Mona
, p. 5459 - 5466 (2008)
Commercially available titania (TiO2) is reported as an extremely efficient catalyst for the synthesis of α-aminophosphonates. A three-component reaction of an amine, an aldehyde or a ketone and a dialkyl phosphite (Kabachnik-Fields reaction) took place in one-pot, under solvent-free conditions to afford the corresponding α-aminophosphonates in high yields and short times. The TiO2 catalyzed α-aminophosphonate synthesis in the present study perhaps represents a true three-component reaction as no intermediate formation of either an imine or α-hydroxyphosphonate was observed that indicated the simultaneous involvement of the carbonyl compound, the amine and the phosphite in the transition state. Furthermore, the catalyst can be reused for several times without any significant loss of catalytic activity.
A highly efficient bismuth salts-catalyzed route for the synthesis of α-aminophosphonates
Banik, Antara,Batta, Sahil,Bandyopadhyay, Debasish,Banik, Bimal K.
experimental part, p. 8205 - 8213 (2011/02/22)
A convenient synthesis of different types of α-amino phosphonates via one-pot solvent-free three component reactions of aldehydes, amines and phosphites catalyzed by bismuth salts has been investigated. Bismuth triflate is found to be the most effective catalyst for this reaction.
