6141-55-5

Upstream product

• 161157-05-7 3'a,4',7',7'a,10,11-hexahydro-5',7'-dimethylspiro[5H-dibenzo[a,d]cycloheptene-5,3'-(3'H-indazole)]-4,7-dione 

Downstream Products

• 15323-21-4 10,10’,11,11’-tetrahydro-5H,5’H-5,5’-bidibenzo[a,d][7]annulene 
• 15323-24-7 5,5'-bi(10,11-dihydro-5H-dibenzocycloheptenylidene) 
• 101220-51-3 1-(p-chlorophenyl)spirocycloheptene> 
• 101220-49-9 1-(p-methylphenyl)spirocycloheptene> 
• 96025-95-5 2-(10,11-Dihydro-5H-dibenzocyclohepten-5-ylio)-3,5-dioxo-4-p-tolyl-1,2,4-triazolidin-1-id 
• 91120-38-6 10,11-Dihydro-6',7'-diphenylspiro<5H-dibenzocyclohepten-5,3'-<3H>pyrazolo<5,1-c><1,2,4>triazol> 
• 91120-41-1 10,11-Dihydro-6'-methyl-7'-phenylspiro<5H-dibenzocyclohepten-5,3'-<3H>pyrazolo<5,1-c><1,2,4>triazol> 
• 256-81-5 suberene 
• 27410-55-5 8,9-dihydro-4H-cyclopenta[def]phenanthrene 
• 98370-87-7 5a,9b-dihydro-5H-benzocyclobut<1,2-a>indene 
• 79532-58-4 2-(10,11-Dihydro-5H-dibenzocyclohepten-5-ylio)-3,5-dioxo-4-phenyl-1,2,4-triazolidin-1-id 
• 144660-80-0 10,11-dihydro-5H-dibenzocyclohepten-5-one triphenylphosphazine 
• 1210-35-1 10,11-Dihydro-5H-dibenzo[a,d]cyclohepten-5-one 
• 5018-92-8 5-Methoxy-10.11-dihydro-5H-dibenzo[a,d]cyclohepten 

Relevant academic research and scientific papers

Rationale for Predominance of 1,3-Dipolar Cycloreversion in Thermolysis of 3,4-Dihydropyrazole from Ethano-bridged Diphenyldiazomethane and 2,5-Dimethyl-1,4-benzoquinone. An X-Ray Study

The X-ray crystal structure of the title dihydropyrazole indicates that the steric and ?-conjugative effects associated with the conformational locking of the two phenyl rings are the crucial factors in the predominance of 1,3-dipolar cycloreversion rather than nitrogen extrusion to give the cyclopropane derivative.

1,3-Dipolar Cycloreversion of the 1-Pyrazoline from 5-Diazo-10,11-dihydro-5H-dibenzocycloheptene and 2,5-Dimethyl-1,4-benzoquinone

Thermolysis of the pyrazoline formed from 5-diazo-10,11-dihydro-5H-dibenzocycloheptene and 2,5-dimethyl-1,4-benzoquinone gives the component diazoalkane and quinone via 1,3-dipolar cycloreversion, in competition with nitrogen extrusion to give the cyclopropane derivative.