RecordNumber
219
Doc. No.
189A
Call. No.
189A
Author
Mallakpour, S. E
Title of Article
Synthesis of some substituted naphthalenes via benzyne and their 13C-NMR and 1H-NMR studies
Title Of Periodical
JOURNAL OF SCIENCES ISLAMIC REPUBLIC OF IRAN
VolumNumber
V.4,No.2
Date
(1993)
Page
P.112-118
Descriptors
Diazotization,Benzyne,Cyclopentadienone derivatives
Abstract
Aprotic diazotization of anthranilic acid with isoamylnitrite or amylnitrite gave benzenediazonium-2-carboxylate. Subsequent thermal decomposition of this diazonium salt (in situ) in 1,2-dichloroethane as a solvent at 85C and in the presence of 2,5-dienthyl-3,4-diphenylcyclopentadienone as a trapping agent gave 1,4-diethyl-2,3-diphenylnaphthalene in high yield, after loss of carbon monoxide. Also, thermal decomposition of this diazonium salt (in situ) was carried outin 1,1,2-trichloroethane as a solvent at 108C in the presence of 2,5-dimethyl-3,4-diphenylcyclopentadienone (monomer) and after loss of carbon monoxide, 1,4-dimethyl-2,3-diphenylnaphthalene was obtained in excellent yield. These naphthalene derivatives were studies by IR, 1H-NMR, 13C-NMR mass spectra and elemental analysis.
Indexer
1376/11
IndexDate
Shahsavary
اطلاعات ثبت
GN113221