Benzophenone and methyl orange sensitized photooxidation of flavone and 4' -methoxy flavone : A comparative study

School of Studies in Chemistry and Biochemistry, Vikram University, Ujjain-456 010, Madhya Pradesh, India

E-mail : drshubhajain@yahoo.com

Govt. College, Barnagar (Ujjain)-456 771, Madhya Pradesh, India

E-mail : rekha.nagwanshi@gmail.com

Manuscript received 22 April 2008, revised 15 May 2009, accepted 7 July 2009

Benzophenone and methyl orange sensitized photooxidation or flavone and 4-methoxy flavone (la and b) by UV light in presence of air gave different products. With benzophenone where substrate is in the excited state, it gave 2a and b and with methyl orange and where oxygen is in the excited state, it gave 3a and b. The structures of the products have been confirmed by spectral and elemental analyses.