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The invention relates to a process for the preparation of alfuzosin hydrochloride method, method comprises the following steps: (1) 15 C following, acrylonitrile into the the methylamine is mellow solution to stir, by distillation to obtain (I); (2) to (I) is dripped reducing agent in an organic solvent, heating to reflux, then slowly sequentially into the 25% sodium hydroxide solution and distilled water, by the distillation treatment to obtain the (II); (3) under dry condition, the thionyl chloride is slowly dripped into the 2 – tetrahydrofuran formic acid, a 2 – tetrahydrofuran chloride; (4) the temperature control in the 5 – 15 C conditions, will be 2 – tetrahydrofuran formyl the chlorine drips into containing acid, organic solvent and (II) of the mixed solution, then completing the stirring 3 hours, for 25% sodium hydroxide solution to neutralize, by organic solvent extraction, (III) be; (5) to (III) with 2 – chloro – 4 – amino – 6, 7 – dimethoxy quinazoline in presence of organic solvent, reflux stirring 4 – 10 hours, cooling and filtering, and steaming and removing the organic solvent, acetone dispersed precipitate solid, then re-crystallizing mixed solvent, to get the alfuzosin hydrochloride (IV). (by machine translation)
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Reference：
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem