1984
DOI: 10.1139/v84-420
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Photoinduced isomerization reactions of azetidinodiazepines

Abstract: . 62, 2440 (1984).Ultraviolet irradiation of the azetidinodiazepines 3 leads in good yield to the expected tricyclic isomers 4 which represent potential precursors for the synthesis of 3-azacarbapenam derivatives. The rigid boat-shaped topology of the photoisomers 4 could be ascertained by detailed 'H and I3C nmr measurements, and in particular by the determination of nuclear Overhauser effects. That only the syn stereoisomers 4 are formed is most likely due to the conformation of the precursors 3 in which the… Show more

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Cited by 7 publications
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