431056-75-6Relevant academic research and scientific papers
TfOH/C-catalyzed one-pot three-component synthesis of α-amino phosphonates under solvent-free conditions
Jafari, Abbas Ali,Amini, Sakineh,Tamaddon, Fatemeh
, p. 677 - 684 (2013)
The TfOH/C was readily prepared via simple absorption of triflic acid onto activated charcoal. This solid acid was used as an efficient catalyst for the synthesis of α-aminophosphonates through the Kabachnik-Fields reaction of carbonyl compound, amine and
Highly efficient one-pot synthesis of α-aminophosphonates using nanoporous AlSBA-15 catalyst in a three-component system
Kolli, Murali Krishna,Palani, Elamathi,Govindasamy, Chandrasekar,Katta, Vishweshwar Rao
, p. 1047 - 1064 (2018/10/31)
Nanoporous AlSBA-15 catalysts with different nSi/nAl ratios (41, 129, and 210) were synthesized using a hydrothermal method. These catalysts were characterized by XRD, N2 sorption, TPD-NH3, FT-IR, SEM and TEM. XRD analyses of AlSBA-15 catalysts confirmed the presence of well-ordered crystalline structure with p6mm symmetry. The specific surface area and specific pore volume of the AlSBA-15 catalysts are in the range of 480 to 757?m2/g and 0.65 to 0.95?cm3/g, respectively. The catalytic performance of nanoporous AlSBA-15 catalysts are used as an outstanding catalytic system for one-pot synthesis of α-aminophosphonates via Kabachnik-Fields reaction in a three-component system using amines (primary/secondary), carbonyl compounds (aldehydes/ketones) and diethyl phosphite. The major advantages of the present contributions are excellent yields, short reaction time, simple experimental technique, high chemo-selectivity, catalyst recyclability, easy work-up procedure and green approach. Three-component synthesis of α-aminophosphonates follows first imine formation from amine and aldehyde/ketone followed by phosphate addition. The experimental findings suggest that the nanoporous AlSBA-15 catalysts can be recycled and reused up to six cycles without any loss in the catalytic performance.
CeCl37H2O-catalyzed one-pot Kabachnik-Fields reaction: A green protocol for three-component synthesis of α- aminophosphonates
Jafari, Abbas Ali,Nazarpour, Mahshid,Abdollahi-Alibeik, Mohammad
experimental part, p. 397 - 403 (2011/07/07)
CeCl37H2O has been utilized as an efficient Lewis acid catalyst for the three-component coupling of aldehydes, aromatic amines, and diethylphosphite to produce α-aminophosphonates under solvent-free conditions. The advantages of this protocol are high yield, mild reaction conditions, less environmental pollution, and simple work-up procedure.
