424827-07-6Relevant articles and documents
Intramolecular addition of a hydroxyl to a N-acyliminium system. Application to the synthesis of isoindolo[2,1-a] [3,1]benzoxazine and isoindolo[1,2-c][2,4] benzoxazepine derivatives
Pigeon, Pascal,Sikoraiova, Jana,Marchalin, Stefan,Decroix, Bernard
, p. 129 - 138 (2007/10/03)
The titled compounds were prepared by the reaction of hydroxylated lactam (3a-c) or (10) with p-toluenesulfonic acid in dichloromethane. The ratio of diastereomeric mixtures (4b/5b (2/1) or 4c/5c (2/1) or 11/12 (5/1)) is discussed.