Epoxidizing method of alpha-pinene

[0016] Example 1

[0017] 100 parts of α-pinene, 400 parts of acetonitrile, 1200 parts of tert-butanol, 50 parts of bicarbonate, 700 parts of 30wt% H 2 O 2 , 1 part of zinc chloride catalyst is mixed, and the reaction starts soon after stirring at room temperature, and the temperature rises slowly. The reaction liquid was white misty and turbid at first, and then turned light yellow. The reaction was maintained for 50 hours and then stopped. Filter, extract, wash with saturated brine, dry with anhydrous sodium sulfate, and distill to recover the solvent to obtain a pale yellow liquid. GC analysis: 10.8% of raw materials and 78% of pinane oxide.

[0018] Example 2

[0019] Combine 100 parts of α-pinene with 420 parts of acetonitrile, 1230 parts of tert-butanol, 52 parts of bicarbonate, 730 parts of 30wt% H 2 O 2 , Mix 1.1 parts of cobalt chloride catalyst, cool in an external water bath, make the temperature not exceed 30°C, stir for 48 hours, filter, extract, wash with saturated brine, dry with anhydrous sodium sulfate, and distill to recover the solvent to obtain a light yellow liquid. GC analysis: 4.1% of raw materials and 76.7% of pinane oxide.

[0020] Example 3

[0021] Combine 100 parts of α-pinene with 440 parts of acetonitrile, 1270 parts of tert-butanol, 60 parts of bicarbonate, 760 parts of 30wt% H 2 O 2 , Mix 1.2 parts of manganese sulfate catalyst, cool in an external water bath, make the temperature not exceed 30°C, stir for 52 hours, filter, extract, wash with saturated brine, dry with anhydrous sodium sulfate, and distill to recover the solvent to obtain a light yellow liquid. GC analysis: 1.1%% of raw materials and 94.6% of pinane oxide. The obtained light yellow liquid was distilled under reduced pressure to collect 108-110/60mmHg colorless liquid with a net weight of 34.38 grams. If the purity of α-pinene is 95%, the separation yield is 78.8%.