A process for the preparation of optically active isomers of 5 - (3,4 - dimethoxybenzyl) - 5 - methylhydantoin

• 1. 酸直接水解5-甲基-5-(3,4-二甲氧基苄基)乙内酰脲制备甲基多巴的方法 [P] . 中国专利： CN102911072B . 2014.12.24
• 2. 微波碱水解5-甲基-5-(3,4-二甲氧基苄基)乙内酰脲制备甲基多巴的方法 [P] . 中国专利： CN102775319B . 2014.04.16
• 3. method of producing optically effective isomers of 5 - (3,4 - dimethoxybenzyl) - 5 - methylhydantoin [P] . 德国专利： DE000001620751A . 1970-04-23

  机译： 生成5-（3,4-二甲氧基苄基）-5-甲基乙内酰脲的光学有效异构体的方法

• 4. Salt of an optically active isomer of phenylglycine and an optically active isomer of 2-amino butanol and process for its preparation [P] . 欧洲知识产权局专利： EP0000745B1 . 1981-07-15

  机译： 苯基甘氨酸的旋光异构体和2-氨基丁醇的旋光异构体的盐及其制备方法

• 5. SALT OF AN OPTICALLY ACTIVE ISOMER OF PHENYLGLYCINE AND AN OPTICALLY ACTIVE ISOMER OF 2-AMINO BUTANOL AND PROCESS FOR ITS PREPARATION [P] . 德国专利： DE2860839D1 . 1981-10-22

  机译： 苯丙氨酸的光学活性异构体和2-氨基丁香酚的光学活性异构体的盐及其制备方法

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• 4. 5，5-二甲基乙内酰脲体系化学镀金工艺及性能的研究 [A] . 付文超 . 2018