Dibromostearic acid

The ethereal solution of dibromostearic acid, prepared as described above, is introduced slowly from a dropping funnel into the reaction flask. After the react ion has been allowed to proceed for 6 hours with... 

Stearolic acid has been prepared by the dehydrohalogenation of brominated olive or almond oil,3 dibromostearic acid,4 or dichlorostearic acid.6 The procedure described is a modification of one used by Kino.4... 

The presence of a double bond in oleic acid is shown by the fact that one gram-molecule of the acid unites with one gram-molecule of bromine dibromostearic acid is formed —... 

I. Cis-. (Oleo-dibromostearic acid, Oleic acid dibromide). 

Diazo-3,3,3-trifluoropropionyl phospholipids, 440 Diazomethane, All Dibromostearic acids, 465 Dicarboxylic acids, 44, 319,463,469 Dichlorostearic acids, 465 Dielectric constant, 355,356,357 Diene synthesis, 473,476 Diepoxystearic acid, 460 Diesters, 144,154 Dietary requirements, 527 Diethyl ether, solvent for triacylglycerols, 375... 

Nearly all methods for preparation of stearolic acid involve de-hydrohalogenation of a 9,10-dihalostearic acid, or its esters, with alcoholic potassium hydroxide the most recent method is that of Adkins and Burks.8 These methods employ drastic conditions, which result in poorer yields than those obtainable on dehydrohalogenation with sodamide.6 Methyl 9,10-dibromostearate, on dehydrobromi-nation with sodamide, yields stearolamide 6 (m.p. 82-83°) which may be hydrolyzed to stearolic acid. For preparative purposes, however, this method offers-no special advantage over that described here. 

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