889996-92-3Relevant academic research and scientific papers
An efficient procedure for the TEMPO-catalyzed oxidation of alcohols to aldehydes and ketones using ferric chloride hexahydrate as terminal oxidant
Kumar, R. Senthil,Karthikeyan,Perumal, Paramasivan T.
, p. 720 - 725 (2008)
A simple, efficient procedure for the oxidation of alcohols by catalytic 2,2,6,6-tetramethyl-piperidyl-l-oxy (TEMPO) was developed using FeCl 3·6H2O as the terminal oxidant. The reaction gives high yield of the corresponding aldehydes and ketones with no over oxidation to the acid.
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.
