1,2-dimethyl-3-(1-phenylethyl)benzene

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: O-xylene, 5096g, was charged to a 12 liter bottom outlet Pyrex reactor equipped with a mechanical agitator, heating mantle, addition funnel, cooling coil, thermometer, and a reflux condenser. Sulfuric acid, 981g of 96%, was charged in one portion with agitation. Styrene, 3749g, was added dropwise at 80°-85° C. over 90 min. The mixture was agitated for an additional 30 min. at 80°-85° C. after the styrene addition was complete. The mixture was allowed to settle for 45 min. and the lower sulfuric acid layer was drained off (1294.3g). A solution of sodium hydroxide (80g in 552g of water) was charged and the mixture was adjusted to 80° C. while agitating for 30 min. The mixture was allowed to settle for 30 min. and the lower sodium hydroxide layer was drained off (940.8g) at 80° C. Hot water (1440g) was charged and the mixture was agitated for 15 min. then allowed to settle for 30 min. The water wash was separated leaving 7982g of crude phenylxylylethane alkylate. The phenylxylylethane alkylate was vacuum fractionated to remove excess o-xylene then pure phenylxylylethane, BP 224° C. at 100 mmHg. equipped with a mechanical agitator heating mantle, addition funnel cooling coil to settle for 45 min. was adjusted to 80° C. while agitating for 30 min to settle for 30 min. at 80° C the mixture was agitated for 15 min. to settle for 30 min The water wash was separated

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: In a pressure reaction vessel were charged 100 g of sodium phenolate, 40 g of phenol and 400 g of 1-phenyl-1-(2,3-dimethylphenyl)-ethane, and a reaction was allowed to proceed at 170° C. and at a carbon dioxide pressure of 10 kg/cm2 (G) for 2 hours, with stirring. The reaction mixture was cooled and charged into 500 ml of water, followed by separation into the reaction medium layer and the water layer at 90° C. The water layer was extracted with 50 g of xylene, and the phenol was recovered with an aqueous sodium hydroxide solution from the reaction medium and extraction medium layers. After recovery of phenol, the water layer was made acid with dilute sulfuric acid to give 94.3 g of salicylic acid, with neither p-hydroxybenzoic acid nor isophthalic acid being detected as an isomer. The yield based on sodium phenolate was 90.2%, and the recovered phenol was 57 g, with the selectivity being 98.5%. In a pressure reaction vessel The reaction mixture was cooled followed by separation into the reaction medium layer at 90° C The water layer was extracted with 50 g of xylene the phenol was recovered with an aqueous sodium hydroxide solution from the reaction medium and extraction medium layers

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: In a pressure reaction vessel were charged 100 g of sodium phenolate, 40 g of phenol and 400 g of 1-phenyl-1-(2,3-dimethylphenyl)-ethane, and a reaction was allowed to proceed at 170° C. and at a carbon dioxide pressure of 10 kg/cm2 (G) for 2 hours, with stirring. The reaction mixture was cooled and charged into 500 ml of water, followed by separation into the reaction medium layer and the water layer at 90° C. The water layer was extracted with 50 g of xylene, and the phenol was recovered with an aqueous sodium hydroxide solution from the reaction medium and extraction medium layers. After recovery of phenol, the water layer was made acid with dilute sulfuric acid to give 94.3 g of salicylic acid, with neither p-hydroxybenzoic acid nor isophthalic acid being detected as an isomer. The yield based on sodium phenolate was 90.2%, and the recovered phenol was 57 g, with the selectivity being 98.5%. In a pressure reaction vessel The reaction mixture was cooled followed by separation into the reaction medium layer at 90° C The water layer was extracted with 50 g of xylene the phenol was recovered with an aqueous sodium hydroxide solution from the reaction medium and extraction medium layers

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: O-xylene, 5096g, was charged to a 12 liter bottom outlet Pyrex reactor equipped with a mechanical agitator, heating mantle, addition funnel, cooling coil, thermometer, and a reflux condenser. Sulfuric acid, 981g of 96%, was charged in one portion with agitation. Styrene, 3749g, was added dropwise at 80°-85° C. over 90 min. The mixture was agitated for an additional 30 min. at 80°-85° C. after the styrene addition was complete. The mixture was allowed to settle for 45 min. and the lower sulfuric acid layer was drained off (1294.3g). A solution of sodium hydroxide (80g in 552g of water) was charged and the mixture was adjusted to 80° C. while agitating for 30 min. The mixture was allowed to settle for 30 min. and the lower sodium hydroxide layer was drained off (940.8g) at 80° C. Hot water (1440g) was charged and the mixture was agitated for 15 min. then allowed to settle for 30 min. The water wash was separated leaving 7982g of crude phenylxylylethane alkylate. The phenylxylylethane alkylate was vacuum fractionated to remove excess o-xylene then pure phenylxylylethane, BP 224° C. at 100 mmHg. equipped with a mechanical agitator heating mantle, addition funnel cooling coil to settle for 45 min. was adjusted to 80° C. while agitating for 30 min to settle for 30 min. at 80° C the mixture was agitated for 15 min. to settle for 30 min The water wash was separated

Conditions: temp:280.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Trisodium 5-sulfoisophthalate (312 g) was added to 170 g of a 50% aqueous solution of sodium hydroxide, and the mixture was stirred. Then, 1980 g of 1-phenyl-1-(2,3-dimethylphenyl)-ethane was mixed, and the resulting mixture was heated to 280° C. in a nitrogen stream and dehydrated with stirring. The dehydrated mixture was stirred at 280° C. for 1.5 hours. After cooling, 1 liter of water was added to the reaction mixture to separate the reaction medium. The aqueous layer was decolorized with activated carbon, and precipitated with dilute sulfuric acid to give 172.5 g (yield 94.8%) of 5-hydroxyisophthalic acid. with stirring The dehydrated mixture was stirred at 280° C. for 1.5 hours After cooling to separate the reaction medium precipitated with dilute sulfuric acid

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: In a pressure reaction vessel were charged 100 g of sodium phenolate, 40 g of phenol and 400 g of 1-phenyl-1-(2,3-dimethylphenyl)-ethane, and a reaction was allowed to proceed at 170° C. and at a carbon dioxide pressure of 10 kg/cm2 (G) for 2 hours, with stirring. The reaction mixture was cooled and charged into 500 ml of water, followed by separation into the reaction medium layer and the water layer at 90° C. The water layer was extracted with 50 g of xylene, and the phenol was recovered with an aqueous sodium hydroxide solution from the reaction medium and extraction medium layers. After recovery of phenol, the water layer was made acid with dilute sulfuric acid to give 94.3 g of salicylic acid, with neither p-hydroxybenzoic acid nor isophthalic acid being detected as an isomer. The yield based on sodium phenolate was 90.2%, and the recovered phenol was 57 g, with the selectivity being 98.5%. In a pressure reaction vessel The reaction mixture was cooled followed by separation into the reaction medium layer at 90° C The water layer was extracted with 50 g of xylene the phenol was recovered with an aqueous sodium hydroxide solution from the reaction medium and extraction medium layers

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: O-xylene, 5096g, was charged to a 12 liter bottom outlet Pyrex reactor equipped with a mechanical agitator, heating mantle, addition funnel, cooling coil, thermometer, and a reflux condenser. Sulfuric acid, 981g of 96%, was charged in one portion with agitation. Styrene, 3749g, was added dropwise at 80°-85° C. over 90 min. The mixture was agitated for an additional 30 min. at 80°-85° C. after the styrene addition was complete. The mixture was allowed to settle for 45 min. and the lower sulfuric acid layer was drained off (1294.3g). A solution of sodium hydroxide (80g in 552g of water) was charged and the mixture was adjusted to 80° C. while agitating for 30 min. The mixture was allowed to settle for 30 min. and the lower sodium hydroxide layer was drained off (940.8g) at 80° C. Hot water (1440g) was charged and the mixture was agitated for 15 min. then allowed to settle for 30 min. The water wash was separated leaving 7982g of crude phenylxylylethane alkylate. The phenylxylylethane alkylate was vacuum fractionated to remove excess o-xylene then pure phenylxylylethane, BP 224° C. at 100 mmHg. equipped with a mechanical agitator heating mantle, addition funnel cooling coil to settle for 45 min. was adjusted to 80° C. while agitating for 30 min to settle for 30 min. at 80° C the mixture was agitated for 15 min. to settle for 30 min The water wash was separated