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4 results on '"Yun-Cheng Yuan"'

1. Syntheses of long-chain quaternary ammonium salts from fatty alcohols by microwave irradiation

Author

Jun Pang, Yun-Cheng Yuan, Yu-Qiao Hu, and Yu-Lin Jiang

Subjects
Tertiary amine, Hydrogen, Chemistry, General Chemical Engineering, Organic Chemistry, Inorganic chemistry, Halide, chemistry.chemical_element, Transesterification, Chemical synthesis, Catalysis, chemistry.chemical_compound, Organic reaction, Organic chemistry, Ammonium
Abstract

The phase-transfer catalysts, long-chain quaternary ammonium salts, were rapidly synthesized from fatty alcohols by the reactions with hydrogen halides in the presence of trialkyl amines under microwave irradiation. The catalysts could be widely applied in a variety of quick and new organic reactions, whether by conventional heating or under microwave irradiation. The reaction efficiencies under microwave irradiation were higher than those obtained with conventional heating.

Published
1996

2. Facile N-Alkylation of Anilines with Alcohols Over Raney Nickle Under Microwave Irradiation

Author

Jun-Min Liu, Ji-Shan Wu, Yun-Cheng Yuan, Yu-Lin Jiang, Yu-Qiao Hu, Qing-Sheng Hao, De-Peng Li, Shu-Qing Feng, and Zu-Wang Wu

Subjects
chemistry.chemical_compound, Chemistry, Organic Chemistry, Microwave irradiation, Alkylation, Microwave, Raney nickel, Nuclear chemistry
Abstract

The anilines could be easily and selectively N-alkylated with alcohols in the presence of a small amount of Raney nickel and with a greatly shortened period under microwave irradiation. A purely non-thermal effect of microwave was observed in the reaction.

Published
1996

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