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CAS号83077-00-3 ethyl N-(4-nitr... | CAS号100-02-7 对硝基苯酚 | CAS号344266-15-5 O-(p-nitropheny... | CAS号350-46-9 对氟硝基苯 | CAS号41828-26-6 p-nitrophenyl b... | CAS号100-66-3 苯甲醚 | CAS号100-00-5 对硝基氯苯 | CAS号33543-54-3 N-B°C-O-(4-nitr... | CAS号118-83-2 5-氯-2-硝基三氟甲苯 | CAS号100-02-7 对硝基苯酚 | CAS号90-04-0 邻氨基苯甲醚 | CAS号104-94-9 对甲氧基苯胺 | CAS号51-28-5 2,4-二硝基酚 | CAS号141645-16-1 2-丁基-3-(4-羟基苯甲酰... | CAS号141627-42-1 2-丁基-3-(4-甲氧基苯甲... | CAS号351368-41-7 3-氨基-1-环丙基-6,7-... | CAS号4291-29-6 5-Nitro-2-biphenylol📜O-(4-Nitrophenyl)Hydroxylamine Hydrochloride置于sodium Hydroxide体系中,用 二氯甲烷,水 作为反应溶剂,以45.5 G的收率获得产物o-(4-硝基苯基)羟胺
参考文献:Process For Preparing Benzofuran Derivatives Substituted At Position 5
标题:Process For Preparing Benzofuran Derivatives Substituted At Position 5
摘要:该披露涉及一种制备一般式i的苯并呋喃衍生物的过程:其中r,R1和r2如披露中定义;通过将羟胺与一般式iii的二酮偶联,以形成氧胺,然后通过加热环化以形成所需化合物.
海关参考信息
- 2908199090-其他酚的卤化衍生物
2908999090-其他酚的硝化衍生物
2918290000-其他含酚基羧酸 - 💡 提示:海关信息按照顺序优先匹配,如需确认的海关信息,请参考相关资料。
- 详情请参考:📖 海关编码查询和海关进出口税则
专利信息
专利号:US-8779201-B2
优先权日:2007-10-02
标题 :Process for preparing benzofurans
发明人:EKLUND LARS
权利人:CAMBREX KARLSKOGA AB
摘要:There is provided a process for the preparation of a compound of formula (I), wherein R 1 , R 2 , R 3 , R 4 , X and Y are as described in the description. Such compounds may, for example, be useful intermediates in the synthesis of drugs such as Dronedarone.
专利号:CN-115109020-A
优先权日:2022-05-18
标 题 :A kind of spirolactone substituted cyclohexadienone oxime compound and its synthesis method