80171-40-0Relevant academic research and scientific papers
AZOBENZENE DERIVATIVE AND MANUFACTURING METHOD THEREFOR
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Paragraph 0093-0096, (2019/10/19)
PROBLEM TO BE SOLVED: To provide an azobenzene derivative useful as an intermediate of 2-substituted 4,4'-diaminoazobenzene used as a manufacturing raw material of a polyimide optical oriented film for liquid crystal display, and an effective manufacturing method therefor. SOLUTION: There is provided an azobenzene derivative represented by the general formula (1). R1 represents a hydrogen atom, an alkyl group which may be substituted, an acyl group which may be substituted and an alkoxycarbonyl group which may be substituted. R2 represents a hydrogen atom, an arylmethyl group which may be substituted, an alkali metal oxysulfonyl methyl group or an alkoxycarbonyl group which may be substituted. R3 is a nitro group, an arylmethylamino group which may be substituted, an alkali metal oxysulfonyl methylamino group, or an alkoxycarbonyl amino group which may be substituted. SELECTED DRAWING: None COPYRIGHT: (C)2019,JPOandINPIT
Photooxygenation of nitrobenzyl derivatives. Mechanism of photogeneration and hydrolysis of α-hydroperoxy nitrobenzyl ethers
Wan, Peter,Muralidharan, S.,McAuley, Iain,Babbage, Christopher A.
, p. 1775 - 1783 (2007/10/02)
The photooxygenation of nitrobenzyl derivatives 1-10 has been studied in aqueous solution as a function of pH.For m-nitrobenzyl ethers 2-4 and 9, stable α-hydroperoxy ethers (11-13) are the primary photochemical products.Acid hydrolysis of 11-13 gives m-nitrobenzaldehyde and hydrogen peroxide.Quantum yields for photooxygenation are reported for a number of derivatives as a function of pH.Acid and base catalyses of photooxygenation are observed for several compounds.A mechanism involving photogenerated nitrobenzyl carbanion intermediates is proposed.
