33238-44-7

Upstream product

• 71-43-2 benzene 
• 22103-85-1 2-benzoylbenzoyl chloride 
• 85-44-9 phthalic anhydride 
• 85-52-9 2-Benzoylbenzoic acid 

Downstream Products

• 7139-42-6 6,12-diphenyl-dibenzo[b,f][1,5]diazocine 
• 111838-36-9 4-ethoxy-4-phenyl-1,4-dihydro-3,1-benzoxazin-2(1H)-one 
• 87386-05-8 ? (2-isocyanatophenyl)(phenyl)methanone 

Relevant academic research and scientific papers

A rapid and efficient access to diaryldibenzo[b,f][1,5]diazocines

2-Benzoylbenzoyl azides undergo facile cyclization under acidic conditions to give substituted dibenzo[b,f][1,5]-diazocines in good yields. This approach shortens the synthetic steps toward these compounds as compared with conventional methods. The mechanism of the diazocine synthesis is assumed to proceed by an unprecedented intermolecular [2 + 2] cyclization.

Benzylic Azide Functionalization of Tautomeric o-Acyl-benzoic Acid, -benzamide, and -nicotinic Acid Derivatives, and Thermal Decomposition of the Derived Azides

A series of benzylic azido compounds were prepared by the reactions of o-acyl-benzoic acids and -benzamides and pyridine analogues with sodium azide, diphenylphosphoryl azide, and trimethylsilyl azide.Thermal decomposition of the derived benzylic azides afforded three types of rearrangement products.The selectivity of rearrangement depended on the migratory aptitude of substituents and on stereoelectronic factors.