An efficient oxidation of 2-pyrazolines and isoxazolines by bis-bromine-1,4-diazabicyclo[2.2.2]octane complex (DABCO-Br-2)

作者：Azarifar Davood^*; Khosravi Kaveh; Veisi Rahman Ali

来源：ARKIVOC, 2010, 178-184.

• Bis-bromine-1,4-diazabicyclo[2.2.2]octane
• DABCO-Br-2
• isoxazoles
• 2-pyrazoles
• oxidation

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-Br-2) 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.

• 出版日期2010