A kind of new synthetic method of 5-phenyltetrazolium
A phenyltetrazolium, a newly synthesized technology, applied in the direction of organic chemistry, can solve the problems of explosion and danger, and achieve the effect of high product yield and simple synthesis process
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Embodiment 1
[0013] Add 81 grams of hydrazine hydrate into the three-necked flask, slowly add 39 grams of sulfuric acid under stirring, and start the rapid dropwise addition to make the temperature reach 40°C, control the temperature between 28 and 32°C, mix 130 grams of benzonitrile, 150 ml of water The solution prepared with 150 milliliters of ethanol was added rapidly, and after all the additions were completed, the temperature was raised to 60° C., and kept at this temperature for 3 hours. After cooling to about 35°C, add 200 grams of reagent hydrochloric acid, control the reaction temperature at 10-15°C, and dropwise add sodium nitrite solution prepared by 81 grams of sodium nitrite and 238 grams of water to the above reaction solution. Control the reaction solution at a constant temperature between 20-25°C for 18 hours, add a solution prepared by adding 90 grams of sodium hydroxide and 110 ml of water, heat up to 85°C, and keep the temperature between 85°C-88°C for 3 hours. Cool to ...
Embodiment 2
[0015] Add 81 grams of hydrazine hydrate into the three-necked flask, slowly add 78.9 grams of concentrated hydrochloric acid under stirring, and start to add it dropwise quickly, so that the temperature reaches 40 ° C, and control the temperature between 28 and 32 ° C. Mix 130 grams of benzonitrile and 150 ml of water The solution prepared with 150 milliliters of ethanol was added, and after all the additions were completed, the temperature was raised to 60° C., and kept at this temperature for 3 hours. After cooling to about 35°C, add 128 grams of reagent hydrochloric acid, control the reaction temperature at 10-15°C, and add the sodium nitrite solution prepared by 81.2 grams of sodium nitrite and 238 grams of water dropwise in about 1.5 hours. above reaction solution. Control the temperature of the reaction solution at 20-25°C for 18 hours, add a solution prepared by adding 48.5 grams of sodium hydroxide and 100 ml of water, heat up to 85°C, maintain the temperature between...
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