Hetero Ring[E][1,4]Diazepines

Chlorolactames 2a-f reacted with sodium azide to give the cyclopropylketimines 3a-f (75-89%), and acid hydrolysis of 3c,d yielded the cyclopropylketones 6c,d (61-67%). Compounds 3a-f and 6c, d were transformed by heating (170-240 degrees C, sublimation) to the air-sensitive dihydropyrroles 4a-f (51-71%) and dihydrofurans 7c, d (85-91%). Oxidation of the dihydro derivatives 4a-f and 7c,d with DDQ led to novel types of pyrrolo[3,2-e][1,4]diazepinedione derivatives 5a-f (75-84%) and furo[1H][3,2-e][1,4]diazepinediones 8c, d (91-93%).

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Hetero Ring[E][1,4]Diazepines

Cited by 2 publications

References 48 publications

ChemInform Abstract: Hetero Ring(e)(1,4)diazepines

ChemInform Abstract: Hetero Ring(e)(1,4)diazepines

Facile Preparation of Hexahydropyrrolo[3,2-e][1,4]diazepine- 2,5-diones and Tetrahydrofuro[1H][3,2-e][1,4]diazepine- 2,5-diones by Rearrangements of Cyclopropylketimines and Cyclopropylketones

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