A DNMR study on the ring inversion of oxazolidines  

作　　者：YANG,Li The National Laboratory on Applied Organic Chemistry,Lanzhou University,Lanzhou 730000GAO,Kun KONG,Su-Ling CHEN,Yao-Zu Department of Chemistry,Lanzhou University,Lanzhou 730000 

出　　处：《Chinese Journal of Chemistry》1990年第5期430-434,共0页中国化学（英文版）

摘　　要：Ring inversion of eight substituted 2-phenyl-4,4-dimethyloxazolidines in o-dichloro- benzene-d_4 was studied by ~H DNMR.Very high inversion barriers((?)G_c(?)=86.7—93.4 kJ·mol^(-1)) were found for these oxazolidine rings.The magnitude of the inversion barrier is dependent on the polarity of the substituent on the phenyl group.A linear correlation is present between the (?)G_c(?) of the inversion and the substituent constant,σ^+,of the substituent.Ring inversion of eight substituted 2-phenyl-4,4-dimethyloxazolidines in o-dichloro- benzene-d_4 was studied by ~H DNMR.Very high inversion barriers((?)G_c(?)=86.7—93.4 kJ·mol^(-1)) were found for these oxazolidine rings.The magnitude of the inversion barrier is dependent on the polarity of the substituent on the phenyl group.A linear correlation is present between the (?)G_c(?) of the inversion and the substituent constant,σ^+,of the substituent.

关 键 词：RING A DNMR study on the ring inversion of oxazolidines 

分 类 号：O6[理学—化学]