Preparation method of testosterone enanthate
A technology of testosterone enanthate and testosterone, which is applied in the improvement field of synthesis process, can solve the problems of increased sewage treatment cost, high production cost, incomplete reaction and the like, and achieves the effects of less pollution, easy control of reaction conditions and simple operation.
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[0039] The present invention will be further described below in conjunction with specific examples 1-6, but the present invention is not limited.
[0040] The raw materials used in the present invention, the etherified product obtained through the etherification reaction, the testosterone through the reductive hydrolysis reaction, the purity and the yield are shown in Table 1.
[0041] The process steps of the present invention for preparing testosterone enanthate are as follows:
[0042] ⑴. Etherification reaction: pump absolute ethanol and triethyl orthoformate into the reaction tank, add 4-AD, and after dissolving, add pyridine hydrobromide, control the temperature to 42~45℃, and react for 8 hours; After the end, freeze the crystallization at 0±2℃ and centrifuge to obtain the etherate, or add triethylamine after the reaction, reduce the temperature and control the temperature at 0~5℃, keep the temperature and stir for 1 hour, at 0±2℃, freeze the crystallization , Centrifugation t...
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