The influence of the technological parameters on the epoxidation of (Z,E,E)-1,5,9-cyclododecatriene (CDT) with 30% hydrogen peroxide to (E)-1,2-epoxy-(Z,E)-5,9-cyclododecadiene (ECDD) was studied under the conditions of phase transfer catalysis (PTC), in the presence of H3PW12O40/Aliquat 336 catalytic system. The parameters considered included stirring speed, the molar ratios of CDT:H2O2 and H2O2:H3PW12O40, temperature, and the nature and concentration of solvent. The variation ranges of these parameters ensuring a high CDT conversion and high selectivity of transformation to ECDD were established. The CDT conversion was 51.4–55.6% and the selectivity of transformation to ECDD was 79.8–95.1%.
The influence of the technological parameters on the epoxidation of 1,5,9-cyclododecatriene (CDT) to 1,2-epoxy-5,9-cyclododecadiene (ECDD) by the phase-transfer catalysis method (PTC) in the presence of tungstophosphoric heteropolyacid (H 3 PW 12 O 40 ) and hydrogen peroxide as the oxidizing agent has been presented. The phase-transfer catalyst was Aliquat ® 336 (methyltrioctylammonium chloride). The epoxidation of CDT to ECDD in the PTC system proceed under the relatively mild condition: low temperature, lack of solvent, short reaction time. The effect of: the mixing velocity, the molar ratio of CDT:H 2 O 2 and H 2 O 2 :H 3 PW 12 O 40 , the nature of the solvent and its concentration, was studied. The most advantageous technological parameters were: the mixing rate 400 -600 rpm, the molar ratio of CDT:H 2 O 2 = 3:1 -1.5:1, the molar ratio of H 2 O 2 :H 3 PW 12 O 40 = 200:1 -400:1, the temperature 40 -50°C, solvent: dichloromethane or lack of the solvent, dichloromethane concentration: 10 -50 vol%, reaction time 35 -50 min. The application of the above-mentioned parameters allows to achieve the yield of 44 -47% ECDD in relation to introduced CDT.
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