S(=O)(=O)(O)O.[OH:6][CH2:7][CH2:8][CH2:9][CH:10]1[CH2:21][CH2:20][CH2:19][CH2:18][CH2:17][CH2:16][CH2:15][CH2:14][CH2:13][CH2:12][C:11]1=[O:22].[OH:23][OH:24]>C(O)(=O)C>[O-:23][OH:24].[OH:6][CH2:7][CH2:8][CH2:9][CH:10]1[CH2:21][CH2:20][CH2:19][CH2:18][CH2:17][CH2:16][CH2:15][CH2:14][CH2:13][CH2:12][C:11]1=[O:22]These processes are known from EP 0 424 787. EP 0 424 787 describes that an aqueous solution of sulphuric acid is added to a mixture of 2-(3-hydroxypropyl)-1-cyclododecanone and glacial acetic acid. To this mixture hydrogen peroxide (70%) is added, which reacts with 2-(3-hydroxypropyl)-1-cyclododecanone to form a precipitate of a hydroperoxide of 2-(3-hydroxypropyl)-1-cyclododecanone (referred to as DDP-OOH). The precipitate is subsequently filtered, washed with water and then with diluted NaHCO3, after which it is dried.
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