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4-DIMETHYLAMINO-N-TRIPHENYLMETHYLPYRIDINIUM CHLORIDE

DIMETHYLAMINO-N-TRIPHENYLMETHYLPYRIDINIUM CHLORIDE (Pyridinium, 4-(dimethylamino)-1-(triphenylmethyl)-, chloride)... [Pg.93]

Dimethylamino-N-triphenylmethylpyridinium chloride Pyridinium, 4-(dimethylamino)-1-(triphenylmethyl)-, chloride (10) (78646-25-0) 4-Dimethylaminopyridine Highly TOXIC 4-Pyridinamine, N,N-dimethyl- (9) (1122-58-3)... [Pg.95]

Tritylation (9. 179).3 4-Dimethylamino-N-triphenylmethylpyridinium chloride (I) has been prepared by reaction of trityl chloride with DMAP. It has been presumed to be the effective reagent in tritylations cataly7ed by DMAP. It does... [Pg.156]

Benzyl trichloracetimidate (48) is a new reagent for acid-catalysed benzylation of alcohols in the presence of trifluoromethanesulphonic acid, and benzyl p-toluenesulphonate-potassium carbonate has been recommended as abenzylat-ing system for phenols, especially in cases where benzyl chloride-potassium carbonate gives C-alkylated impurities.Facile removal of benzyl ether protecting groups has been achieved by catalytic transfer hydrogenation with Pd(OH)2 on carbon and cyclohexene as hydrogen-donor. A new procedure for O-tritylation by treatment of an alcohol trimethylsilyl ether with trityl trimethylsilyl ether is shown in equation (6). The synthesis and characterization has been completed of 4-dimethylamino-N-triphenylmethylpyridinium chloride (49)," a postulated intermediate in the formation of trityl ethers from alcohols... [Pg.175]

See other pages where 4-DIMETHYLAMINO-N-TRIPHENYLMETHYLPYRIDINIUM CHLORIDE is mentioned: [Pg.94]    [Pg.125]    [Pg.140]    [Pg.186]    [Pg.273]    [Pg.265]    [Pg.94]    [Pg.125]    [Pg.140]    [Pg.186]    [Pg.273]    [Pg.265]   


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4-DIMETHYLAMINO-N-TRIPHENYLMETHYLPYRIDINIUM CHLORIDE: PYRIDINIUM

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