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ChemicalBook CAS DataBase List 1,3-Dinitrobenzene
99-65-0

1,3-Dinitrobenzene synthesis

14synthesis methods
1,3-Dinitrobenzene is accessible by nitration of nitrobenzene. The reaction proceeds under acid catalysis using sulfuric acid. The directing effect of the nitro group of nitrobenzene leads to 93% of the product resulting from nitration at the meta-position. The ortho- and para-products occur in only 6% and 1%, respectively.
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Yield:99-65-0 92%

Reaction Conditions:

with dihydrogen peroxide in water at 85;Green chemistry;

Steps:

1
Take 198.6mg (1mmol) 2,4-dinitrophenylhydrazine and 1mmol H2O2, 5ml H2O in 50ml single neck flask oil bath set 85 deg.] C, a reddish color system, TLC monitored the reaction, extracted three times with 10ml of dichloromethane while raw material disappeared, the combined organic phase was dried over anhydrous Na2SO4 Dried, filtered and the solvent was removed by rotary evaporation to give a white solid 155mg, yield 92%, purity 98%.

References:

Henan Normal University;guo, zhijun;Zhou, Hongyan;Qu, feng Bo;Zhang, Weiwei;Guo, li Bing CN103880682, 2016, B Location in patent:Paragraph 0011; 0012

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