FLASH-VACUUM PYROLYSIS (FVP) ON ZEOLITES - 2 - PYROLYSIS OF 5-BETA-(ACETOXYETHYL)-5H-DIBENZO[A,D]CYCLOHEPTANE - 11-ACETOXY-9,10-DIHYDRO-9,10-PROPANOANTHRACENE AND 11-HYDROXY-9,10-DIHYDRO-9,10-PROPANOANTHRACENE

Authors
BANCIU MD CIRA O PETRIDE A BANCIU A
Citation
Md. Banciu et al., FLASH-VACUUM PYROLYSIS (FVP) ON ZEOLITES - 2 - PYROLYSIS OF 5-BETA-(ACETOXYETHYL)-5H-DIBENZO[A,D]CYCLOHEPTANE - 11-ACETOXY-9,10-DIHYDRO-9,10-PROPANOANTHRACENE AND 11-HYDROXY-9,10-DIHYDRO-9,10-PROPANOANTHRACENE, Revue Roumaine de Chimie, 42(11), 1997, pp. 1093-1098
Citations number
9
Journal title
Revue Roumaine de Chimie → ACNP
ISSN journal
00353930
Volume
42
Issue
11
Year of publication
1997
Pages
1093 - 1098
Database
ISI
SICI code
0035-3930(1997)42:11<1093:FP(OZ->2.0.ZU;2-C
Abstract
Flash-vacuum pyrolyses (FVP) of the title compounds 8, 7 and 6, perfor med at 0.65 mbar in argon atmosphere at 350 degrees C in the presence of different acidic zeolites, afforded product distributions similar t o FVP of 5 beta-(hydroxyethyl)-5H-dibenzo[a,d]cycloheptene (1) indicat ing 7H-benzo[c]fluorene (2); 6,11b-dihydro-7H-benzo[c]fluorene (3) and benzo[a]fluorene (13) as main reaction products. The reaction seems t o involve only the outer surface of catalysts. The cationic reaction m echanism is supported by identification of two hydrocarbon intermediat es which afford the same FVP products as 6-8 as well as by comparison with the results of the FVP of 6-8 over acidic alumina at different te mperatures.