Hydroxy schiff base-oxazolidine tautomerism: Apparent breakdown of baldwin's rules
作者:Mario E.Alva Astudillo、Norris C.J. Chokotho、Terence C. Jarvis、C.David Johnson、Colim C. Lewis、Peter D. McDonnell
DOI:10.1016/s0040-4020(01)91431-0
日期:1985.1
The tautomerism between hydroxy Schiff bases, X-C6H4CR=NCMe2CH2OH (R=H, Me, C6H5; X is a range of substituents) and X-C6H4,CR=NC6H4 (o-CH2OH), and the corresponding ring closed systems, oxazolidines and dihydrobenzoxazines, has been investigated. In all cases where equilibria can be determined the process is shown to be extremely facile, despite the fact that Baldwin's rules are contravened. Information
羟基席夫碱(XC 6 H 4 CR = NCMe 2 CH 2 OH(R = H,Me,C 6 H 5 ; X是取代基的范围))和XC 6 H 4,CR = NC 6 H 4(邻-CH 2OH),以及相应的闭环系统,恶唑烷和二氢苯并恶嗪已得到研究。在所有可以确定平衡的情况下,尽管鲍德温规则被违反,但该过程显示极其灵活。固态NMR提供了有关某些处于结晶状态的分子结构的信息。在1-甲基-1,3-恶唑烷和三氟乙酸其互变异构体亚胺的平衡以前的工作被示出为通过形成三氟复杂,但总的结论是,这-5- -过程也是快速,似乎是正确的。讨论了这些推论的一些机械后果。