219-92-1

Upstream product

• 4860-44-0 6,7-dihydro-5H-dibenzo[a,c]cyclohepten-6-ylamine; hydrochloride 
• 118-92-3 anthranilic acid 
• 7443-47-2 5-Cyan-5,7-dihydro-6H-dibenzocyclohepten 
• 3526-27-0 biphenyl-2,2'-diyldi-acetonitrile 
• 1139-82-8 5,7-dihydro-dibenzo[a,c]cyclohepten-6-one 
• 3594-99-8 dibenzocycloheptan-6-ol 
• 5807-64-7 diphenic acid dimethyl ester 
• 863305-32-2 diphenic acid 
• 38274-14-5 2,2'-bis-(bromomethyl)-1,1'-biphenyl 
• 3594-90-9 2,2'-bis(hydroxymethyl)biphenyl 
• 85-01-8 phenanthrene 
• 264-08-4 benzocycloheptatrien 

Downstream Products

• 883-20-5 9-methylphenanthrene 
• 4444-43-3 2,3;4,5-Dibenztropon 
• 4707-71-5 Phenanthrene-9-carboxaldehyde 
• 85-01-8 phenanthrene 
• 776-35-2 9,10-dihydrophenanthrene 
• 1015-80-1 6,7-dihydro-5H-dibenzo[a,c][7]annulene 
• 949-41-7 9,10-methanophenantrene 
• 949-41-7 1a,9b-dihydro-cyclopropa[1]phenanthrene 
• 837-45-6 phenanthrene-9-carboxylic acid 
• 84-11-7 9,10-phenanthrenequinone 
• 7125-62-4 1,2-benzo-1,3-cycloheptadiene 
• 1075-16-7 6,7,8,9-tetrahydro-5H-benzo[7]annulene 
• 264-08-4 benzocycloheptatrien 
• 90-12-0 1-Methylnaphthalene 

Relevant academic research and scientific papers

Flow-vacuum pyrolysis of dibenzocycloheptane annelated derivative on zeolites catalysts

The pyrolysis of 5H-6,7-dihydrodibenzo[a,c]cyclohepten-6-ol (5) in FVP conditions, a method of thermal decomposition in advanced vacuum, inert atmosphere on zeolites/acid Al2O3 at variable temperature between 300- 350° C is presented. The reaction products were identified by GC/MS using authentic samples and a reaction mechanism involving cationic species as intermediates was proposed. A comparison with the pyrolysis of the same compound performed in FVP conditions on quartz is presented.

Thermal Reorganizations of 1,2:3,4-Dibenzotropilidene (5H-Dibenzocycloheptene), 7,7'-Bi(1,2:3,4-dibenzotropyl) cycloheptenyl)>, and the 1,2:3,4-Dibenzotropyl (Dibenzocycloheptenyl) Free Radical

1,2:3,4-Dibenzotropilidene (5H-dibenzocycloheptene, 8) has been shown to thermally produce phenanthrene (12), 9-methylphenanthrene (13), 9,10-dihydrophenanthrene (14), and 1,2:3,4-dibenzocycloheptadiene (6,7-dihydro-5H-dibenzocycloheptene, 15).With added naphthalene, to trap the extruded one-carbon species, 1,2-benzotropilidene (16), α-methyl- and β-methylnaphthalene (17 and 18), 1,2-benzo-1,3-cycloheptadiene (19), and benzocycloheptene (20) were also produced.Reaction of 1,2-benzotropilidene with phenanthrene produced 1,2:3,4-dibenzotropilidene (8) and naphthalene, showing the reversibility of this thermal carbon extrusion reaction. 7,7'-Bi(1,2:3,4-dibenzotropyl) cycloheptenyl), 10> was prepared by VCl2 reduction of the 1,2:3,4-dibenzotropylium cation.Thermally it underwent the same reactions as 8, demonstrating that it is the 1,2:3,4-dibenzotropyl (dibenzocycloheptenyl) free radical (9) which lost a carbon atom (CH group) to the aromatic acceptor.At 200 deg C the dimer 10 produced significant quantities of 9-methylphenanthrene (13), shown not to arise from 8, in addition to phenanthrene, 12.Mechanisms for the thermal transfer of a CH group from 9 to an aromatic acceptor and for the production of 13 from 9 are presented.