Method for synthesizing 1,2-dimethoxy-1-phenylethane
A synthesis method and technology of phenylethane, applied in the field of organic compound synthesis, can solve the problems of long reaction time, complicated reaction process, expensive catalyst and the like, and achieve the effects of simple operation, broad application prospect and feasible process
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Embodiment 1
[0023] 1. Preparation of solid acid catalyst:
[0024] Weigh 12.8g of ZrOCI 2 ·8H 2 O in a beaker, add a certain amount of water and ethanol (volume ratio 3:1) to make a solution with a mass fraction of 8%, after mixing evenly, add concentrated ammonia water dropwise to the solution under rapid stirring, and adjust the pH to 9 , the solution was formed into a gel, and the gel was aged at room temperature for 24 hours, filtered with suction, and washed repeatedly until no Cl - . Put the precipitate in an oven and dry at 120°C for 10-12 hours to obtain a solid powder, then grind the powder, impregnate it with 0.5mol / L sulfuric acid solution (15ml / g catalyst) for 12 hours, and filter Then dry it, and bake it in a muffle furnace at 530°C for 3 hours to obtain SO 4 2- / ZrO 2 type solid acid catalyst.
[0025] 2. Catalytic reaction
[0026] Put 1 gram of the catalyst prepared in (1) into the reaction vessel, add 23 milliliters (0.2mol) of m-xylene, 80.9 milliliters (2mol) of...
Embodiment 2
[0028] 1. Preparation of solid acid catalyst:
[0029] Weigh 12.8g of ZrOCI 2 ·8H 2 O and 8.0g of Fe(NO 3 ) 3 9H 2 O in a beaker, add a certain amount of water and ethanol (volume ratio 3:1) to make a solution with a mass fraction of 8%, after mixing evenly, add concentrated ammonia water dropwise to the solution under rapid stirring, and adjust the pH to 9 , the solution was formed into a gel, and the gel was aged at room temperature for 24 hours, filtered with suction, and washed repeatedly until no Cl - . Put the precipitate in an oven and dry at 130°C for 10-12 hours to obtain a solid powder, then grind the powder, impregnate it with 0.5mol / L sulfuric acid solution (15ml / g catalyst) for 12 hours, and filter Then dry it, and bake it in a muffle furnace at 510°C for 3 hours to obtain SO 4 2- / ZrO 2 -Fe 2 o 3 type solid acid catalyst.
[0030] 2. Catalytic reaction
[0031] Put 1 gram of the catalyst prepared in (1) into the reaction vessel, add 23 milliliters (...
Embodiment 3
[0033] 1. Preparation of solid acid catalyst:
[0034] Weigh 12.8g of ZrOCI 2 ·8H 2 O and 12ml of C 16 h 36 o 4 Put Ti in a beaker, add a certain amount of water and ethanol (volume ratio 3:1) to make a solution with a mass fraction of 8%, after mixing evenly, add concentrated ammonia water dropwise to the solution under rapid stirring, and adjust the pH=9 , the solution was formed into a gel, and the gel was aged at room temperature for 24 hours, filtered with suction, and washed repeatedly until no Cl - . Put the precipitate in an oven and dry at 110°C for 10-12 hours to obtain a solid powder, then grind the powder, impregnate it with 0.5mol / L sulfuric acid solution (with 15ml / g catalyst) for 12 hours, and filter Then dry it, and bake it in a muffle furnace at 510°C for 3 hours to obtain SO 4 2- / ZrO 2 -TiO 2 type solid acid catalyst.
[0035] 2. Catalytic reaction
[0036] Put 1 gram of the catalyst prepared in (1) into the reaction vessel, add 23 ml (0.2 mol) m-x...
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