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苯并[d]噁唑啉-2-酮-5-羧酸的合成研究

Study on Synthesis of Benzo[d]oxazolone-5-carboxylic Acid
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摘要 利用较价廉的3-硝基-4-羟基苯甲酸在Pd/C催化下氢化还原得3-氨基-4-羟基苯甲酸,再与氯甲酸甲酯(或氯甲酸乙酯)成环得苯并[d]噁唑啉-2-酮-5-羧酸。目标化合物经1H NMR和MS确证,总收率为81.6%。该方法工艺简单,条件温和,收率较高,便于工业合成。 A relatively cheap 4-hydroxy-3-nitrobenzoic acid was hydrogenated to yield 3-amino-4-hydroxy-benzoic acid,then the amino acid was condensed with met-hyl chloroformate(or ethyl chloroformate) to afford benzo[d]oxazoline-2-one-5-carboxylic acid.the structure of the title product was identified by 1H NMR and MS.The overall yield of the new method was 81.6%.The method is better with a simple process,mild conditions,high yield,and facilitate industrial synthesis.
出处 《科学技术与工程》 北大核心 2012年第17期4250-4251,4270,共3页 Science Technology and Engineering
基金 国家863重大新药创制专项基金(2011ZX09102-005-01)资助
关键词 苯并[d]噁唑啉-2-酮-5-羧酸 多巴胺D3受体选择性拮抗剂 合成 benzo[d]oxazoline-2-one-5-carboxylic acid dopamine D3 receptor selective antagonist synthesis
作者简介 王卫娜(1987-),女,汉族,河南省安阳市人,硕士研究生,研究方向:药物合成。E—mail:weina4365@126.com。 通信作者简介:杨日芳(1968-),男,副研究员,研究方向:新药设计与合成,E—mail:yangrt215@163.com。
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