The diazo reaction of bilirubin: structure of the yellow products
作者:W. Kufer、H. Scheer
DOI:10.1016/s0040-4020(01)88702-0
日期:1983.1
reaction of bilirubins with aromatic diazonium salts in alcoholic solvents leads to an equimolar mixture of two types of products. One is the well-known 9-azopyrromethenone. The other is a yellow product (λmax ≈ 420 nm) identified as 9-alkoxymethylpyrromethenone, the alkoxy-substituent being derived from the solvent. Thus, reaction of the symmetrically substituted bilirubinsIIIα (1c) and XIIIα (1b) in