491572-41-9Relevant academic research and scientific papers
Agent containing quinonimine derivatives and used to colour keratin fibres, and associated method
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, (2008/06/13)
The invention relates to an agent for colouring fibres (A). Said agent is produced by mixing two constituents (A1) and (A2), and is characterised in that the constituent (A1) contains at least one quinonimine derivative of formula (I), and the constituent
Halogenation of N-substituted p-quinonimines and p-quinone oxime esters: I. Chlorination and bromination of 4-aroyloxyimino- and arylsulfonyloxyimino-2,5-cyclohexadienones
Avdeenko,Shishkina,Shishkin,Glinyanaya,Konovalova,Goncharova
, p. 683 - 691 (2007/10/03)
Chlorine and bromine addition to 4-aroyloxyimino- and 4-arylsulfonyloxymino-3-methyl-2,5-cyclohexadienones initially occurs at the C5=C6 double bond. The second chlorine molecule adds at both C2=C3 and C5=C6 double bonds. The chlorination of 2,5-dialkyl-substituted 4-aroyloxyimino- and 4-arylsulfonyloxymino-2,5-cyclohexadienones involves either of the C=C bonds in the quinoid ring.
