7,8-Dihydro acenaphthylene

The Influence of Proton Source on the Formation of 1, 3-Dihydro acenaphthylene IN THE PrOTODEALUMINATION OF 1-Acenaphthenyl(diisobutyl)aluminum (67) ... 

In agreement with this, the analysis of the products forming during the alkylation over MCM-22 samples at different reaction time showed that about 80-90 wt. % of the recovered material is adsorbed on the external surface (phenol, o-TBP and p-TBP), whereas only about 10-20 wt.% is formed inside the zeolite ( coke constituted by p-TBP, naphthalenes, 9,10-dihydro-phenanthrene and acenaphthylene). Coke molecules could be formed in both supercages and sinusoidal channels. However, in the large supercages they would be converted into bulkier compounds, which is not the case. Therefore they are most likely located in the sinusoidal channels. 

Analogously, (as-l,2-dimethylvinyl)-l,2-dimethyl-acenaphthylenium ion (3) was generated by rearrangement of 6b,7,8,8a-tetramethyl-6b,8a-dihydro-cyclobuta[a]acenaphthylene (4) in FS03H-S02C1F at low temperature (Scheme... 

Acenaphthylene heated with lithium aluminum hydride in carbitol at 120° gave 97% yield of acenaphthene [403], Anthracene is reduced very easily to the 9,10-dihydro compound by catalytic hydrogenation [78] and by sodium... 

Acenaphthylen 1580,1583,1584 -5,6-dicarbonsaure-anhydrid 751 -5.6-dicarbonsiiure-dimethylester 751 1.2-Dihydro- -5,6-dicarbonsaure-anhydrid 751 (Z) -2-Hydroxy- 1,2-diphenyl- 808 / Zy-2-Hydroxy-l,2-diphenyl-l,2-dihydro- 808 2-Hydroxy-l-oxo-2-methyl- 1.2.2a, 3,4,5-hexahydrO-809... 

Auch mehrkernige aromatische Verbindungen lassen sich in guten Ausbeuten zu den entsprechenden Dihydro-Derivaten reduzieren7. Anthracen liefert z. B. mit Natriumhy-drazid/Hydrazin (Verhaltnis 1 3 6 2,5 Stdn. 50-55° in Diathylather-Benzol-1 1-Ge-misch) 9,10-Dihydro-anthracen (90% d.Th.), aus Phenanthren (1 4 4 3 Stdn. 50° in Dii-sopropylather-Benzol-1 1-Gemisch) wird 9,1 ()-Dihydro-phenanlhren (92% d.Th.) und aus Acenaphthylen (1 3 3 2 Stdn. 50° in Diisopropylather) 81% d.Th. Acenaphthen erhalten. 

Acenaphthylene reacts with elemental sulfur in DMF at 120°C to give thiophene (Scheme 82) (415) when the reaction was quenched at the early stage, a dihydro-1,4-dithiin, which is a probable intermediate leading to (415), is isolated <89SUL135>. Acenaphthylene also reacts with an S " species, generated by oxidation of a carbon-sulfur electrode, to give (415) in a better yield <94BSF789>. 

CAS 83-32-9 EINECS/ELINCS 201-469-6 Synonyms Acenaphthylene, 1,2-dihydro- 5-Aminoacenaphthene 1,8-Ethylene naphthalene Naphthalene ethylene Naphthylene ethylene Periethylene naphthalene Classification Aromatic hydrocarbon Empirical C12H10... 

Acenaphthylene, 1,2-dihydro-5-nitro-. SeeS-Nitroacenaphthene Acephate... 

Regulatory FDA 21CFR 170.60, 172.170, 172.175 USDA 9CFR 318.7 5-Nitroacenaphthene CAS 602-87-9 EINECS/ELINCS 210-025-0 Synonyms Acenaphthene, 5-nitro- Acenaphthylene, 1,2-dihydro-5-nitro- 1,2-Dihydro-5-nitroacenaphthylene 5-NAN 5-Nitronaphthalene ethylene Empirical C12H9NO2... 

Studied using nanosecond laser flash photolysis. It is reported that two reaction pathways are possible electron transfer or nucleophilic addition when thermodynamically feasible, the electron-transfer pathway dominates. The electronic absorption spectrum of the radical cation (25) has been obtained by y-irradiation of 6b,7,8,8a-tetrahydrocyclobut[a] acenaphthylene in a CFCI3—CF2BrCF2Br matrix at 77 At >640 nm, this is converted into an isomer (26) which is the same as the radical cation obtained by ionization and irradiation of l,4-dihydro-l,4-ethanonaphtho[l,8-de][l,2]diazepine (27) at >540 nm. The electronic absorption spectra of aU the radical... 

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