Reactions of hydroxyethylamino-1,4-benzoquinones with 2,4,6-trimethylbenzonitrile oxide, II
作者:Manfred Schubert-Zsilavecz、Dagmar Gusterhuber、Werner Likussar
DOI:10.1007/bf00810029
日期:1993.11
3,4,9a,9b-Tetrahydro-2H-1,2-oxazolo[5,4-h]1,4-benzoxazin-6(6aH)-ons 5a-c were obtained by the reaction of hydroxyethylamino-1,4-benzoquinones 2a-c with nitrile oxide 3. The structures of the cycloadducts were elucidated NMR techniques including inverse longe-range C-13,H-1-experiments and homonuclear NOE difference spectroscopy.