FLOW-VACUUM PYROLYSIS OF POLYCYCLIC COMPOUNDS .8. PYROLYSIS OF 5H-DIBENZO[A,D]CYCLOHEPTENE AND 10,11-DIHYDRO-5H-DIBENZO[A,D]CYCLOHEPTENE

Authors
BANCIU MD ENESCU R CIRA O BANCIU A PETRIDE A
Citation
Md. Banciu et al., FLOW-VACUUM PYROLYSIS OF POLYCYCLIC COMPOUNDS .8. PYROLYSIS OF 5H-DIBENZO[A,D]CYCLOHEPTENE AND 10,11-DIHYDRO-5H-DIBENZO[A,D]CYCLOHEPTENE, Revue Roumaine de Chimie, 39(12), 1994, pp. 1449-1455
Citations number
15
Categorie Soggetti
Chemistry
Journal title
Revue Roumaine de Chimie → ACNP
ISSN journal
00353930
Volume
39
Issue
12
Year of publication
1994
Pages
1449 - 1455
Database
ISI
SICI code
0035-3930(1994)39:12<1449:FPOPC.>2.0.ZU;2-E
Abstract
Flow-vacuum pyrolyses of 5H-dibenzo[a, d]cycloheptene (1) and 10,11-di hydro-5H-dibenzo[a, d] cycloheptene (7) mere studied at 1 Torr and dif ferent temperatures between 400 degrees C and 800 degrees C. The main reaction products mere, in both cases, 9-methylanthracene (3) and anth racene (2) occurring in different sequences : 3 then 2 in pyrolyses of 1 and 2 then 3 in pyrolyses of 7. Hydrocarbon 7 is thermally more sta ble than 1. Reaction mechanisms including radicalic and concerted step s were suggested. For hydrocarbon 1 a comparison with the previously d escribed (Pomerantz(3)) results of pyrolyses in static system is given .