A New Green Approach to 2,3–Dihydro-1H-1,5 –Benzodiazepines

Asieh Yahyazadeh; Jafar Abbasi; Farshid Salimi; Mohamad Saeed Daneshmandi

A New Green Approach to 2,3–Dihydro-1H-1,5 –Benzodiazepines

Asieh Yahyazadeh ¹, Jafar Abbasi ², Farshid Salimi ¹, Mohamad Saeed Daneshmandi ³

Affiliations
1 Department of Chemistry, University of Guilan, P.O. Box 1914, Rasht, Iran, Islamic Republic of
2 Department of Chemistry, Research Centre Medicinal Plants, Islamic Azad University, Ardabil, Iran, Islamic Republic of
3 Department of Electrical and Computer Engineering, University of Tehran, Tehran, Iran, Islamic Republic of

Abstract
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Reaction of some diamines and ketones in the presence of catalytic amount of dodecylbenzene sulfonic acid leads to the formation of 2,3–dihydro -1H-1,5-benzodiazepines in good yields. It seems that dodecylbenzene sulfonic acid has two roles: first it acts as a surfactant to dissolve starting materials in water, and second it acts as an acidic catalyst to activate carbonyl groups.