An efficient oxidation of 2-pyrazolines and isoxazolines by bis-bromine-1,4-diazabicyclo[2.2.2]octane complex (DABCO-Br2)
作者:Davood Azarifar、Kaveh Khosravi、Rahman Ali Veisi
DOI:10.3998/ark.5550190.0011.917
日期:——
An efficient and simple procedure has been developed for the oxidation of 1,3,5-trisubstituted 4,5-dihydro-1H-pyrazoles and -isoxazoles to their corresponding aromatic derivatives promoted by bis-bromine-1,4-diazabicyclo[2.2.2]octane complex (DABCO-Br2) in acetic acid at room temperature. The products 2-pyrazoles and isoxazoles were produced in good to excellent 87-95 % and 78-95 % yields respectively
EL-BAYOUKI, KHAIRY A. M.;IBRAHIM, I. H.;LATIF, N., EGYPT. J. CHEM., 29,(1986) N 1, 107-116
作者:EL-BAYOUKI, KHAIRY A. M.、IBRAHIM, I. H.、LATIF, N.
DOI:——
日期:——
REGAILA, HASSAN A. A.;LATIF, N.;EL-BAYOUKI, KH.;IBRAHIM, I. H., EGYPT. J. PHARM. SCI., 29,(1988) N 1-4, C. 71-87
作者:REGAILA, HASSAN A. A.、LATIF, N.、EL-BAYOUKI, KH.、IBRAHIM, I. H.
DOI:——
日期:——
Oxidative Aromatization of 3,5-Disubstituted Isoxazolines to the Corresponding Isoxazoles with N,N,N’,N’-Tetrabromobenzene-1,3-disolfonamide (TBBDS) and 1,3-Dibromo-5,5-dimetylhydantoin (DBH) as Efficient Reagents under Mild Reaction Conditions
作者:Davood Azarifar、Behrooz Maleki、Kobra Mohammadi
DOI:10.3987/com-06-10961
日期:——
The oxidation of 3,5-disubstituted isoxazolines to the corresponding isoxazoles has been carried out using NNN',N'-tetrabromobenzene-1,3-disolphonamide and 1,3-dibromo-5,5-dimethylhydantoin (DBH) as effective oxidizing agents under mild conditions at rt with good yields.