Steric effects in the cyclisation of diazoalkenes: a new route to 1,2-benzodiazepines
Findlay, R. H.; Sharp, J. T.; Thorogood, P. B.
Журнал:
Journal of the Chemical Society D: Chemical Communications
Дата:
1970
Аннотация:
The sodium salts of the tosylhydrazones of α-dialkylmethylenecyclopentanones do not cyclise to give 3H-pyrazoles but decompose via loss of nitrogen to give dienes, whereas their diarylmethylene analogues cyclise to give 1,2-benzodiazepines in good yield.
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