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本文介绍制备头孢氨苄。２ＤＭＦ合物的新工艺，可制得高质量的头孢氨苄。２ＤＭＦ合物，省去转为头孢氨苄·ＭｅＯＨ合物的精制步骤，直接转为头孢氨苄·Ｈ２Ｏ合物（成品）。
This article describes the preparation of cephalexin. 2DMF compound of the new technology can be obtained high-quality cephalexin. 2DMF compound, eliminating the need of converting to a cephalexin-MeOH complex purification step and converting directly into a cefalexin-H2O compound (finished product).