For hydrogenation of dibenzo 18 crown 6 the catlalyst RuO 2 on alumina was used instead of reported Pichler ruthenium. The separation and purification processes of the targ et product also have been improved. The meth...For hydrogenation of dibenzo 18 crown 6 the catlalyst RuO 2 on alumina was used instead of reported Pichler ruthenium. The separation and purification processes of the targ et product also have been improved. The method is much simple, economic and time saving.展开更多
Benzaldehyde was prepared from the addition hydrolysis reaction of C 6H 5MgBr with 1,3 dimethylbenzimidazolium iodide.The reaction mechanism is suggested and discussed.
文摘For hydrogenation of dibenzo 18 crown 6 the catlalyst RuO 2 on alumina was used instead of reported Pichler ruthenium. The separation and purification processes of the targ et product also have been improved. The method is much simple, economic and time saving.
文摘Benzaldehyde was prepared from the addition hydrolysis reaction of C 6H 5MgBr with 1,3 dimethylbenzimidazolium iodide.The reaction mechanism is suggested and discussed.
