The reactions of carbonyls with a low-valent titanium reagent prepared by TiCl4with Mg in THF were carried out under ultrasonic action at room temperature for 10 min to1 h and corresponding olefins were obtained in go...The reactions of carbonyls with a low-valent titanium reagent prepared by TiCl4with Mg in THF were carried out under ultrasonic action at room temperature for 10 min to1 h and corresponding olefins were obtained in good yields. The results indicate that the titanium-induced reductive coupling of carbonyls to olefins is directly affected by ultra sonic dueto the electron transfer process.展开更多
江苏大学(以下简称本校)从2005起招收来华留学本科临床医学(英语授课)专业(Bachelor of Medicine&Bachelor of Surgery,MBBS)学生。本校为教育部批准接收MBBS学生的资质学校,每年招MBBS学生数额上限为90名。目前本校每年实际招收2...江苏大学(以下简称本校)从2005起招收来华留学本科临床医学(英语授课)专业(Bachelor of Medicine&Bachelor of Surgery,MBBS)学生。本校为教育部批准接收MBBS学生的资质学校,每年招MBBS学生数额上限为90名。目前本校每年实际招收2个行政班、大约共80名MBBS学生;MBBS留学生来自印度、马来西亚、加纳、苏丹、沙特阿拉伯、新西兰等国。本校MBBS的学制为6年。在MBBS专业培养大纲中,组织学与胚胎学分别设在第3、4学期,课时数为组织学90学时(包括60学时理论和30学时实验)及胚胎学30学时(包括24学时理论和6学时实验)。展开更多
文摘The reactions of carbonyls with a low-valent titanium reagent prepared by TiCl4with Mg in THF were carried out under ultrasonic action at room temperature for 10 min to1 h and corresponding olefins were obtained in good yields. The results indicate that the titanium-induced reductive coupling of carbonyls to olefins is directly affected by ultra sonic dueto the electron transfer process.
文摘江苏大学(以下简称本校)从2005起招收来华留学本科临床医学(英语授课)专业(Bachelor of Medicine&Bachelor of Surgery,MBBS)学生。本校为教育部批准接收MBBS学生的资质学校,每年招MBBS学生数额上限为90名。目前本校每年实际招收2个行政班、大约共80名MBBS学生;MBBS留学生来自印度、马来西亚、加纳、苏丹、沙特阿拉伯、新西兰等国。本校MBBS的学制为6年。在MBBS专业培养大纲中,组织学与胚胎学分别设在第3、4学期,课时数为组织学90学时(包括60学时理论和30学时实验)及胚胎学30学时(包括24学时理论和6学时实验)。
