75416-97-6Relevant academic research and scientific papers
Studies of Phosphazenes. Part 14. The Tautomerism of Oxocyclotriphosphazadienes
Dhathathreyan, K. S.,Krishnamurthy, S. S.,Vasudeva Murthy, A. R.,Shaw, Robert A.,Woods, Michael
, p. 1549 - 1554 (1982)
The tautomeric behaviour of 'monohydroxycyclotriphosphazatrienes' has been investigated by 31 P n.m.r. spectroscopy.These derivatives exist as oxocyclotriphosphazadiene tautomers in which the hydrogen atom is attached to a ring nitrogen atom α to the phosphoryl group.Three types of prototropic behaviour are observed: (a) no exchange is detected and only one tautomer is present t)2R3O (R=OMe or OEt)>; (b) exchange takes place between two equivalent sites and only one tautomer is observed ; and (c) exchange occurs between two non-equivalent sites and two tautomers are presented n)>.It is shown that basicity calculations using substituent constants have predictive value since they are in good agreement with the spectroscopic observations.
