In this paper, boron trifluoride supported on coconut shell nano-particles (nano-BF 2 O-coc) was prepared from nano-crystalline coconut shell through mechanical method using ultrasonication. The resultant was utilized to obtain nano-crystalline BF 3 supported on coconut shell nano-particles (nano-BF 2 O-coc). The novel nanostructure has been characterized using Fourier transform infrared spectroscopy, transmission electron microscopy, field-emission scanning electron microscopy, and energy-dispersive X-ray spectroscopy (EDX) techniques. The catalytic activity of the solid acid catalyst has been successfully examined in a one-pot, three-component condensation reaction of barbituric acid, ethyl cyanoacetate or malononitrile, and aldehydes in refluxing ethanol to furnish pyrano[2,3-d]pyrimidine derivatives.

No abstract

No abstract

Practical Copper-Catalyzed N-Arylation of Amine with 20% Aqueous Solution of n-Bu4NOH. -Optimized conditions are developed for the reaction with phenylboronic acid. Bu4NOH as a base solvent plays the role of a phase-transfer catalyst. -(MOLAEI, H.; GHANBARI*, M. M.; Chin. Chem. Lett. 23 (2012) 3, 301-304, http://dx.

No abstract