480-72-8

Upstream product

• 83-32-9 acenaphthene 
• 208-96-8 acenaphthylene 
• 91-17-8 decalin 
• 2235-15-6 1(2H)-acenaphthylenone 

Downstream Products

• 83-32-9 acenaphthene 
• 641-48-5 aceanthrene 
• 30098-38-5 2a,3,4,5-tetrahydroacenaphthen-5-one 
• 100-41-4 ethylbenzene 
• 108-88-3 toluene 
• 95-13-6 1-indene 
• 208-96-8 acenaphthylene 
• 2146-36-3 decahydroacenaphthene 
• 78720-10-2 bis-(1,2,4,5-tetrahydro-3H-acenaphthylen-2a-yl)-peroxide 
• 10047-18-4 5-acetylacenaphthene 
• 7434-96-0 1-acenaphthen-3-yl-ethanone 
• 102022-80-0 2-(4-nitro-benzoyloxy)-2,3,4,5-tetrahydro-2,9-ethano-benzo[b]oxepine 

Relevant academic research and scientific papers

Hydrocracking of Acenaphthene over a Sulfided Ni-Mo/Al2O3 Catalyst

The selectivity of ring opening was investigated for the hydrocracking of acenaphthene under an initial hydrogen pressure of 6 MPa and in the temperature range from 390 to 450 deg C.Major products were classified into the following six components: tetrahydroacenaphthylene, hexahydroacenaphthylene, perhydroacenaphthylene, ring opening products (bicyclic compounds and monocyclic compounds), alkylation products (tricyclic compounds of C13 or larger), and dimerization products (biacenaphthene and their hydrogenated compounds).Ring opening of acenaphthene proceeded via two routes: the direct ring opening of acenaphthene and ring opening after hydrogenation to hexahydroacenaphthylene.In the former reaction only 1-ethylnaphthalene was produced, while 1,8-dimethylnaphthalene and its hydrogenated products were not observed.In the latter reaction, on the other hand, two types of ring opening of a C-C bond adjacent to the benzene ring, the opening of a saturated five-membered ring to produce 1-ethyltetralin and the opening of a saturated six-membered ring to produce 1-propylindane, were observed.

Reduction of Polycyclic Arenes by BH-Boranes, II Borane Catalyzed Hydrogenation of Naphthalenes to Tetralins

Tetrapropyldiborane(6) (TPDB) and triethylborane (TEB) catalyze the regioselective and partial hydrogenation of naphthalene (N) and a number of substituted naphthalenes at 170 deg C to 200 deg C and hydrogen pressures of 25-100 bar.Tetralin (T) is formed quantitatively.Naphthalene derivatives are mainly hydrogenated in the least substituted ring.In the case of alkyl substituents, Lewis acid catalyzed migration and, to a lesser extent C-C bond rupture, lower the yield of the main tetralin derivative.Chlorinated naphthalenes and at the O-atom derivatized naphthols undergo also partial loss of the chloro or oxygen functional groups.The i nitially added borane acts only as a precatalyst and its slowly converted to catalytically active polyboranes of as yet unknown structures.Keywords: Hydroboranes/ Hydrogenation/ Naphthalenes/ Tetralins