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    • 5. 发明专利
    • Method for producing n-[4-(6,7-difluoro-2,4-dioxo-1,4-dihydro-2h-quinazoline-3-yl)-phenyl]-acetamide
    • 生产N- [4-(6,7-二氟-2,4-二氧代-1,4-二氢-2H-喹唑啉-3-基) - 苯基] - 乙酰胺的方法
    • JP2012162464A
    • 2012-08-30
    • JP2011021873
    • 2011-02-03
    • Sumitomo Seika Chem Co Ltd住友精化株式会社
    • TANAKA MUNEAKIKUAD PAULKOBAYASHI TETSUYAONOZUKA TOMOHIRO
    • C07D239/96
    • PROBLEM TO BE SOLVED: To provide a method for efficiently producing high-purity N-[4-(6,7-difluoro-2,4-dioxo-1,4-dihydro-2H-quinazoline-3-yl)-phenyl]-acetamide used as an important precursor for production of pharmaceutical intermediates.SOLUTION: In the method for producing N-[4-(6,7-difluoro-2,4-dioxo-1,4-dihydro-2H-quinazoline-3-yl)-phenyl]-acetamide, N-[4-(6,7-difluoro-2,4-dioxo-1,4-dihydro-2H-quinazoline-3-yl)-phenyl]-acetamide is obtained by reacting 2-amino-4,5-difluorobenzoic acid methyl ester with a phenyl chloroformate compound at a predetermined molar ratio, and then, reacting the resultant phenoxy carbonyl amine compound with N-acetyl 1,4-phenylene diamine in a solvent in the presence of a base without performing an isolating process.
    • 待解决的问题:提供一种有效生产高纯度N- [4-(6,7-二氟-2,4-二氧代-1,4-二氢-2H-喹唑啉-3-基) - 苯基] - 乙酰胺用作药物中间体的重要前体。 解决方案:在N- [4-(6,7-二氟-2,4-二氧代-1,4-二氢-2H-喹唑啉-3-基) - 苯基] - 乙酰胺的制备方法中, 得到[4-(6,7-二氟-2,4-二氧代-1,4-二氢-2H-喹唑啉-3-基) - 苯基] - 乙酰胺,通过2-氨基-4,5-二氟苯甲酸甲酯 酯与预定摩尔比的氯甲酸苯酯化合物反应,然后使所得苯氧基羰基胺化合物与N-乙酰基1,4-苯二胺在溶剂中在碱的存在下反应而不进行分离过程。 版权所有(C)2012,JPO&INPIT