CAS: 369-35-7; 2-Fluoro-4-Nitroaniline

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CAS号402-67-5 间氟硝基苯 | CAS号348-19-6 2-氟-4-硝基乙酰苯胺 | CAS号369-34-6 3,4-二氟硝基苯 | CAS号399-31-5 2-氟乙酰苯胺 | CAS号348-54-9 邻氟苯胺 | CAS号367-11-3 邻二氟苯 | CAS号1073353-89-5 2-氟-4-硝基苯硼酸频那醇酯 | CAS号819057-45-9 2-氟-4-氨基苯硼酸频哪醇酯 | CAS号952664-94-7 2-叔丁基-7-氟-5-硝基-1H-吲哚 | CAS号455-58-3 2-溴-6-氟-4-硝基苯胺

3,4-二氟硝基苯置于氨体系中,用 二甲基亚砜 用作溶剂,以100 %的收率获得2-氟-4-硝基苯胺
参考文献:一种3-氟-5-碘苯胺的制备方法
标题:一种3-氟-5-碘苯胺的制备方法
摘要:本发明提供了一种3‑氟‑5‑碘苯胺的制备方法,包括以下步骤:#imgabs0#;步骤一:化合物ii氨解生成化合物iii;步骤二:化合物iii经氯化碘生成化合物iv;步骤三:化合物iv与亚硝酸钠发生重氮化反应生成重氮盐,在次亚磷酸钠条件下重氮盐发生桑德麦尔反应分解生成化合物v;步骤四:化合物v经还原反应生成3‑氟‑5‑碘苯胺,本发明由3,4‑二氟硝基苯做起始物料的全合成路线过程中避免了使用价格昂贵的起始物料,且各步反应易处理,不需要过柱的方式纯化等繁琐操作,且各步骤中最低的收率也达73%,总收率达61.9%左右.成本低廉,收率高,非常适合工业化生产.

专利信息

专利号:US-6921770-B2
优先权日:2000-07-28
标题:2-Phenyliminothiazolines, their preparation method and anti-rice blast agent containing the same
发明人：HAHN HOH GYU; NAM KEE DAL; CHANG KEE HYUK; CHO KWANG YUN; KIM HEUNG TAE
权利人:KOREA INST SCI & TECH
摘要:2-phenyliminothiazolines of the following formula I, their salts, their preparation method and their use for treating rice blast. The phenyliminothiazolines and their salts of the present invention have low toxicity to environment or living organisms, and exert high activity at low concentration for treating rice blast through a new control mechanism, that is by inhibiting pentaketide synthesis and cyclization of the melanin sythesis process in formula I

专利号:CN-108863820-B
优先权日:2018-07-30
标题 :Synthesis method of substituted o-phenylenediamine

专利号:CN-1850788-A
优先权日:2006-05-26
标题:A kind of nonlinear optical chromophore with Dï¼?Ï€ï¼?A structure and its synthesis method