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PEG mediated eco-friendly one pot sunthesis of benzylamine coumarin derivatives using multicomponent reactant

Viradiya D. J., Kotadiya V. C, Khunt M. D., Baria B. H., Bhoya U. C.

International Letters of Chemistry, Physics and Astronomy

2014

Vol. 11, iss. 2

177-184

A green resourceful, eco-friendly and facile protocol was developed for the synthesis of benzylamine coumarin derivatives by the reaction of 4-hydroxy coumarin, secondary amine and aromatic aldehyde in the presence of PEG400 as a solvent as well as catalyst at room temperature. A wide range of functional groups were tolerated in the developed protocol. The structures of all the synthesized compounds were confirmed by 1H NMR, IR, MASS and Elemental Analysis. The target molecules were obtained in good to excellent yield applying this method.

Easy, Simplistic and Green Synthesis of Various Benzimidazole and Benzoxazole Derivatives Using PEG400 as a Green Solvent

Khunt M. D., Kotadiya V. C., Viradiya D. J., Baria B. H., Bhoya U. C.

International Letters of Chemistry, Physics and Astronomy

2014

Vol. 6

61--68

An improved environmentally benign procedure for the synthesis of various benzimidazole and benzoxazole derivatives using green solvent PEG400. We have optimized the reaction condition and it was found that PEG400 was believed to be best as compared to PEG200, PEG600 and PEG800 at 80 to 85 °C. This method provides a novel route for the synthesis of benzimidazole and benzoxazole derivatives. The main attractive features of this process are a mild reaction conditions, easy workup procedure and good to excellent yield. The structures of all the synthesized compounds were confirmed by 1H NMR, IR, MASS and Elemental Analysis.

Synthesis of O,O,O-Triaryl Phosphorothioates and O-Aryl Phosphorodichloridothioates Using Poly(ethylene glycol) as a Phase Transfer Catalyst

Jadhav V., Wadgaonkar P., Salunkhe M.

Polish Journal of Chemistry

1999

Vol. 73, nr 9

1473-1475

O,O,O-Triaryl phosphorothioates and O-aryl phosphorodichloridothioates have been prepared in good yields and purity from thiophosphoryl chloride and phenol using poly(ethylene glycol)-400 (PEG-400) as a phase transfer catalyst.