PART II. APPLICATION TO SOME 1-PHENYL-3-METHYL-4-AZOSULPHONAMIDO-5-PYRAZOLONE DYES
The Vilsmeier-Haak reaction on 3-methylpyrazolone azosulfonamide derivatives (1,2) has been shown to lead to chlorination of the 5-oxopyrazolone system in addition to diformylation of the 3-methyl group to give the corresponding aminoacroleins (3,4) respe
Awad, Ibrahim M. A.,Hassan, Khairy M.
p. 135 - 142
(2007/10/02)
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