Les Acides Linoliques et leur Oxydation par les Peracides

Organic Peracids.

“…Although numerous other investigators (21,22,91,97,205,217,233,236,240,241,448,449,450,452,486) have studied the reaction of hydrogen peroxide with acetic acid or anhydride, only minor improvements have been made in the original procedures of D'Ans and his colleagues. Thus, Erlenmeyer (205) reported that it is better to add the hydrogen peroxide to the acetic anhydride-sulfuric acid mixture.…”

“…Procedures for the analytical determination of peracetic acid in the presence of hydrogen peroxide and diacetyl peroxide have been described (34,184,241,486).…”

“…Oxidations with organic peracids also lend themselves readily to quantitative and kinetic study (74,75,86,87,89,98,111,114,115,116,119,122,124,249,302,333,345,346,357,487,499,500,501,545,580) (Sections IV and V), since unconsumed peracid can be rapidly determined iodimetrically at suitable time intervals. If desired, a correction can be made in the final yield for the small quantity of product lost as a result of the analyses.…”

“…Perhaps the most satisfactory technique, however, for utilizing the oxidizing capacity of hydrogen peroxide efficiently in organic reactions is to convert the active oxygen to the peracid form. Organic peracids can be readily prepared, usually with little loss of oxygen, by treating organic acids, acyl halides, or acid anhydrides with 25-100 per cent hydrogen peroxide or with inorganic peroxides (21,22,33,91,97,122,123,172,181,182,183,184,185,186,188,189,205,211,212,215,216,217,233,236,239,240,241,242,271,301,360,362,398,448,449,450,452,486,495,525). In many cases the peracid need not be isolated; it is sufficient to dissolve the substance to be oxidized in the organic acid or anhydride and add the hydrogen peroxide (4a, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 24, 35, 45a, 46, 405,406,412, 418, 421, 422, 423, 424, 434, 443, 457, 460, 461, 463, 477a, 483, 489, 490, 491, 492, 505, 506, 509, 524, 525, 537, 538, 541, 551, 552, 557).…”

Woburn Iodine Absorption Method: A Measure of Total Unsaturation in the Presence of Conjugated Double Bonds

“…Among the methods not employing halogen, oxidation with peracetic acid was recommended by Smit (37) for oils with nonconjugated double bonds only; however, Knowles, Lawson, and McQuillen (19), using a similar reagent, claim better results for total unsaturation of conjugated systems than with the Wijs method.…”