Preparation method of 2-methyl-3-biphenylmethanol
A technology of biphenyl alcohol and toluene, applied in the field of fine chemical synthesis, can solve the problems of difficult to remove water purification, tetrahydrofuran can only be used for other purposes, etc.
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[0010] Below we will further illustrate the present invention by embodiment.
[0011] A preparation method of biphenyl alcohol, the preparation method comprising the steps of:
[0012] (1) Catalyst preparation: by weight ratio: 238kg nickel chloride, 133kg aluminum trichloride, 270kg iron trichloride, 170kg cupric chloride are dissolved in hot 4055kg dehydrated alcohol, dehydrated alcohol temperature is 70°C; Add 811kg of activated carbon for coconut shell injection after the dissolution is complete, stir evenly, pour it into an evaporating dish and put it in a vacuum oven, bake at a constant temperature at 120°C for 6 hours, cool and crush to obtain a catalyst;
[0013] (2) For the first Grignard reaction, 780kg of toluene, 11kg of magnesium powder, and 2kg of ethyl bromide were added to the reaction kettle by weight, and stirred. After the reaction was triggered, 2,6-dichloro 260kg of toluene, after the completion of the Grignard reaction, was incubated at 70°C for 3 hours ...
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