1,3,5-Trisubstituted pyrazolines are rapidly and conveniently oxidized to their corresponding pyrazoles by 1,3-dichloro-5,5- dimethylhydantoin(DCH) in solution and solvent-free conditions under microwave irradiation...
Supported by National Natural Science Foundation of China under Grant Nos 10604017 and 10675048, the Key Programme of the Education Branch of Hubei Province under Grant Nos 2004Z002, and the Key Programme of China Three Gorges University under Grant No 2003C02.
The dynamics expansion mechanisms for plasma plume generated by pulsed laser radiation are studied in detail, taking account of plasma ionization effect. Based on the consideration of local conservations of mass, mome...