Process for removing phenolic hydroxyl group from phenolic compounds
Abstract
Abstract PHENOLIC HYDROXYL GROUP OF PHENOLIC COMPOUNDS IS REMOVED BY REACTING A PHENOLIC COMPOUND INCLUDING PHENOL, CRESOL, NAPHTHOL, GUAIACOL, THYMOL, MORPHINAN SERIES PHENOL, STEROIDAL PHENOL AND SALTS THEREOF WITH A COMPOUND REPRESENTED BY THE FORMULA: R-X WHEREIN R IS 2-PYRIDYL, 2-PYRIMIDYL, 2-QUINOLYL, 1-ISOQUINOLYL, OR 3-ISOQUINOLYL AND X IS HALOGEN TO GIVE AN ETHEREAL COMPOUND REPRESENTED BY THE PARTIAL FORMULA: (PHENYL)-O-R WHEREIN R IS AS ABOVE AND HYDROGENATING THE ETHEREAL COMPOUND OVER PALLADIUM CATALYST IN AN INERT SOLVENT IN THE RANGE OF TEMPERATURE FROM 15 TO 100*C. TO SUBSTITUTE THE ETHER GROUP (R-O-) WITH HYDROGEN. THE PROCESS PROCEEDS ECONOMICALLY IN A SHORT PERIOD WITH HIGH YIELDS.
Inventors
- 👤 Yoshiro Sawa
- 👤 Ryozo Maeda
- 👤 Junji Irisawa
Bibliographic Details
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