中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | tetrakis(4-methylphenyl)hydrazine | 1807-53-0 | C28H28N2 | 392.544 |
4,4'-二甲基二苯胺 | di-p-tolylamine | 620-93-9 | C14H15N | 197.28 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
N,N-二(对甲苯基)肼 | N,N-Di-p-tolyl-hydrazin | 27758-60-7 | C14H16N2 | 212.294 |
4,4'-二甲基二苯胺 | di-p-tolylamine | 620-93-9 | C14H15N | 197.28 |
Oxidation of phenosafranin and an excess of aniline gave a novel hydroxylated derivative of pseudo-mauveine. N-Methyl- p-toluidine and bis(4-methylphenyl)amine are efficient building blocks for making mauveine-related chromophores. Their oxidation with K2Cr2O7 is believed to form nitrogen centred radicals which then couple with an aromatic amine by homolytic aromatic substitution of hydrogen. The N-methyl substituent and the p-methyl sub-stituents are essential for the reaction to proceed. N-Methyl substituted chromophores were not demethylated in the reaction or by oxidation with K2Cr2O7 in dilute H2SO4. N-Nitroso-bis(4-methylphenyl)amine rearranges smoothly to the orange compound, (2-nitro-4-methylphenyl)-4-methylphenylamine, when a solution in CH2Cl2 is treated with montmorillonite at room temperature for 24 h. 2,4-Dimethylaniline has been used to make a mauveine homologue. The colour of silk dyed with mauveine chromophores has been compared to the colour of silk dyed with authentic 1862 mauveine.
The exploration of green C–H oxidation for the rapid construction of functional molecules, remains a permanent goal in synthetic chemistry.
绿色C-H氧化的探索,以快速构建功能分子为目标,仍然是合成化学的永久目标。