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ChemicalBook CAS DataBase List 2,3,6,7,10,11-Triphenylenehexol
4877-80-9

2,3,6,7,10,11-Triphenylenehexol synthesis

3synthesis methods
-

Yield:4877-80-9 83.1%

Reaction Conditions:

with ammonium persulfate;sulfuric acid in water at 20; for 7 h;Product distribution / selectivity;

Steps:

1
34.2 g of ammonium persulfate (0.15 mol) was added to 16.5 g of catechol (0.15 mol) dispersed in 50 ml of a 70 wt% aqueous solution of sulfuric acid. The mixture was stirred for 7 hours at room temperature, and the resultant precipitate was then filtered and washed with water. 300 ml of acetone and 1.5 g of activated carbon were added to the precipitate, the mixture was stirred for 30 min at room temperature, and insoluble matter was subsequently filtered off from the mixture. 300 ml of ion- exchanged water was added to the filtrate, and then acetone was distilled off at distillation temperatures of 56 to 100°C under normal pressure (101.3 kPa). The resultant precipitate was filtered and dried under reduced pressure to afford 14.2 g of crystals of HHTP (yield: 83.1%; purity > 99%).

References:

OTSUKA CHEMICAL COMPANY, LIMITED EP1676826, 2006, A1 Location in patent:Page/Page column 4

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