Hydroxypyrene

This procedure is based on the method of Smith, Opie, Waw-zonek, and Prichard3 for the preparation of 2,3,6-trimethyl-phenol. 3-Hydroxypyrene has been prepared by fusion of pyrene-3-sulfonic acid with sodium hydroxide 4 and by desul-fonation of 3-hydroxypyrene-5,8,10-trisulfonic acid with hot, dilute sulfuric acid.5... 

The methods previously reported for the preparation of 3-hydroxypyrene have been found to be unsatisfactory, because of both very poor yields and difficulties in operation. 

The sodium salt of 3-hydroxypyrene is somewhat insoluble in the reaction mixture. Dilution before filtration ensures its removal from the copper residues. 

Sodium salts of 3-hydroxypyrene-5,8,10-trisulphonic acid and of 3,5-dihydro-xyp3rrene-8,10-disulphonic acid (Firm 55). 

With microsecond equipment, the method has been applied to various substituted phenols with 3-hydroxypyrene-5,8,10-sulphonate, for example, the rate constant for recombination is in the region of 10 ° s , comparable with the rate constants for other proton-... 

Pyridine (Py) and 3-hydroxypyrene (ROH) form a hydrogen-bonded complex in non-polar solvents. The absorption spectrum indicates that in the ground state an equilibrium is set up ... 

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