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Cristol

HUNSDIECKER - BORODIN - CRISTOL - FIRTH Decarix)xylation Bromination... [Pg.183]

In some cases we have combined similar reactions under one heading, for instance the Hunsdiecker-Borodin-Cristol-Firth decarboxy-iative bromination. It is not a simple task to decide whether credit is due to... [Pg.459]

The Hunsdiecker reaction is the treatment of the dry silver salt of a carboxylic acid with bromine in carbon tetrachloride. Decarboxylation occurs, and the product isolated is the corresponding organic bromide 16). Since dry silver salts are tedious to prepare, a modification of the reaction discovered by Cristol and Firth (77) is now... [Pg.149]

LaClair (44) and Soloway et al. (SO) have modified the dehydrohalogenation reaction to permit the determination of p,p -DDT in dusts and oil solutions containing technical DDT. The reaction between the base and the halide is carried out at 20° to 30° C., as Cristol (16) has found that under proper conditions at this temperature the p,p -DDT reacts completely, whereas the o,p -DDT and most of the impurities react only slightly. The Association of Official Agricultural Chemists (3) tentative method for the determination of the purity of p,p -DDT, which employs the dehydrohalogenation procedure, has been modified by Fleck (30) so that the reaction is carried out at 25° C. instead of under reflux conditions. [Pg.67]

Cristol et al. (17) have based a method for the determination of p,p -DDT in technical DDT on the fact that the p,pf isomer is almost insoluble in 70% aqueous ethyl alcohol and the o,p isomer is soluble. The method has not been tried with mixtures of the other chlorinated hydrocarbons. [Pg.69]

See other pages where Cristol is mentioned: [Pg.245]    [Pg.76]    [Pg.154]    [Pg.183]    [Pg.46]    [Pg.796]    [Pg.2]    [Pg.371]    [Pg.88]    [Pg.443]    [Pg.150]    [Pg.225]    [Pg.1112]    [Pg.1129]    [Pg.11]    [Pg.390]    [Pg.391]    [Pg.793]    [Pg.797]    [Pg.806]    [Pg.808]    [Pg.862]    [Pg.75]    [Pg.580]    [Pg.584]    [Pg.634]    [Pg.968]    [Pg.1100]    [Pg.1101]    [Pg.1163]    [Pg.1357]    [Pg.1357]    [Pg.1371]    [Pg.1469]    [Pg.225]    [Pg.1112]    [Pg.1129]    [Pg.294]    [Pg.295]    [Pg.381]    [Pg.35]    [Pg.70]    [Pg.70]   
See also in sourсe #XX -- [ Pg.183 ]

See also in sourсe #XX -- [ Pg.100 , Pg.101 ]

See also in sourсe #XX -- [ Pg.172 ]

See also in sourсe #XX -- [ Pg.172 ]



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Cristol-Firth method

Cristol-Firth method reaction

Cristol-Firth modification

Cristol-Firth modification, Hunsdiecker reaction

HUNSDIECKER - BORODIN - CRISTOL - FIRTH

Hunsdiecker-Cristol reaction

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