References
- Koster , J. B. , Timmermans , G. J. and van Bekkum , H. 1971 . Synthesis , 139
- Pitt , I. G. , Russell , R. A. and Warrener , R. N. 1984 . J. Chem. Soc., Chem. Commun. , 1464
- This compound readily undergoes thermal isomerisation (t0.5 = 44 min., 30°C) to the aromatic phthalimide, but can be isolated by centrifugal layer chromatography (silica, 5% ethyl acetate, hexane). 1H NMR (CDCl3) δ 1.42, s, 6H, CH3; 1.62, s, 6H,CH3; 2.91, s, 3H, NCH3)
- Denis , J. M. , Girard , C. and Conia , J. M. 1972 . Synthesis , 549
- These assignments are not firm, being assigned on the basis of chemical shift data alone