Method for preparing 1,4-di(2,4-dinitrophenoxy)naphthalene
A technology of dinitrophenoxy and dinitro, which is applied in 1 field to achieve the effects of easy popularization and application, high product yield and purity, and less waste
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Embodiment 1
[0027] 16.0 grams (0.10 moles) of 1,4-naphthalenediol, 44.6 grams (0.22 moles) of 2,4-dinitrochlorobenzene, 110.4 grams (0.80 moles) of potassium carbonate, 700 milliliters of N,N-dimethyl Put formamide and 180ml of toluene into the reaction kettle, stir, heat and reflux for water separation for 18 hours, concentrate the reaction solution, recover the solvent for recycling, cool the reactant system, add water, precipitate the solid product, wash with hot water for 2 to 3 times, dry to obtain 46.9 grams of 1,4-bis(2,4-dinitrophenoxy)naphthalene crystal product, the purity is 99.0%, according to the actual obtained 1,4-bis(2,4-dinitrophenoxy) According to the amount of phenoxy)naphthalene and the theoretical amount (49.2 grams), the calculated yield of 1,4-bis(2,4-dinitrophenoxy)naphthalene is 95.4%.
Embodiment 2
[0029] 16.0 grams (0.10 moles) of 1,4-naphthalenediol, 54.4 grams (0.22 moles) of 2,4-dinitrobromobenzene, 55.2 grams (0.40 moles) of potassium carbonate, 150 milliliters of N,N-dimethyl Put acetamide and 15 ml of xylene into the reaction kettle, stir, heat and reflux for water separation for 3 hours, concentrate the reaction solution, recover the solvent for recycling, cool the reactant system, add water, precipitate a solid product, wash with hot water for 2- 3 times and dried to obtain 33.1 grams of 1,4-bis(2,4-dinitrophenoxy)naphthalene crystal product with a purity of 98.7%. According to the amount of phenoxy)naphthalene and the theoretical amount (49.2 grams), the calculated yield of 1,4-bis(2,4-dinitrophenoxy)naphthalene is 67.3%.
Embodiment 3
[0031] 16.0 grams (0.10 moles) of 1,4-naphthalenediol, 40.5 grams (0.20 moles) of 2,4-dinitrochlorobenzene, 10.6 grams (0.10 moles) of sodium carbonate, 80 milliliters of N-methyl-2- Pyrrolidone, 200 milliliters of benzene and 30 milliliters of dichlorobenzene were put into a reaction kettle, stirred, heated to reflux and separated from water for 16 hours, concentrated the reaction solution, recovered the solvent for recycling, cooled the reactant system, added water, and precipitated a solid product. Washed with hot water for 2 to 3 times, dried to obtain 34.6 grams of 1,4-bis(2,4-dinitrophenoxy)naphthalene crystal product with a purity of 99.0%. According to the actual obtained 1,4-bis(2 , the amount of 4-dinitrophenoxy)naphthalene and the theoretical yield (49.2 grams), the calculated yield of 1,4-bis(2,4-dinitrophenoxy)naphthalene was 70.3%.
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