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CAS号4771-47-5 3-氯-2-硝基苯甲酸 | CAS号50-45-3 2,3-二氯苯甲酸 | CAS号1336-21-6 氨水 | CAS号2525-16-8 3,4,5,6-四氢-7-甲氧... | CAS号7477-63-6 7-氯靛红 | CAS号582319-05-9 2-乙酰氨基-2-((7-氯-... | CAS号106038-61-3 4,10-dichloro-5... | CAS号106782-55-2 8-chloro-3-(2-c... | CAS号101012-31-1 2-Amino-3-chlor... | CAS号40872-87-5 3-氨基-4-氯苯甲酸甲酯 | CAS号90407-14-0 7-氯苯并噻吩 | CAS号50-45-3 2,3-二氯苯甲酸 | CAS号77820-58-7 2-氨基-3-氯苯甲酸甲酯 | CAS号63497-60-9 3-氯靛红酸酐 | CAS号61487-25-0 (2-氨基-3-氯苯基)甲醇 | CAS号101494-95-5 8-氯喹唑啉-4-醇 | CAS号123278-03-5 3-氯-2-碘苯甲酸 | CAS号34311-83-6 5-chloro-1,2,3,...2,3-二氯苯甲酸置于copper(L) Chloride Sodium Hydroxide,氨体系中,用 水 作为反应溶剂,化学反应生成 2-氨基-3-氯苯甲酸
参考文献:Process For The Preparation Of 2-Amino-3-Chlorobenzoic Acid
标题:Process For The Preparation Of 2-Amino-3-Chlorobenzoic Acid
摘要:本发明涉及一种制备2-氨基-3-氯苯甲酸的方法,通过将1摩尔的2,3-二氯苯甲酸溶解在约400至2000份水中,加入至少等摩尔量的碱金属氢氧化物或等摩尔量的碱金属氢氧化物的水溶液,然后在铜青铜,铜(I)盐和/或铜(II)盐的存在下,在约150oc至220oc的温度下与约500至2500摩尔%的氨反应.
海关参考信息
- 2903919090-氯苯
2905110000-甲醇
2906210000-苄醇
2912110000-甲醛 - 💡 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。
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专利信息
专利号:US-9453037-B2
优先权日:2011-07-28
标 题 :Methylphenidate-prodrugs, processes of making and using the same
发明人:GUENTHER SVEN; CHI GUOCHEN; BERA BINDU; MICKLE TRAVIS; BERA SANJIB
权利人:KEMPHARM INC; KEMPHARM INC
摘要:The present technology is directed to prodrugs and compositions for the treatment of various diseases and/or disorders comprising methylphenidate, or methylphenidate derivatives, conjugated to at least one alcohol, amine, oxoacid, thiol, or derivatives thereof. In some embodiments, the conjugates further include at least one linker. The present technology also relates to the synthesis of methylphenidate, or methylphenidate derivatives, conjugated to at least one alcohol, amine, oxoacid, thiol, or derivatives thereof or combinations thereof.
专利号:US-5998620-A
优先权日:1997-03-25
标 题 :Synthesis of intermediates useful in preparing tricyclic compounds
发明人:CHEN XING; POIRIER MARC; WONG YEE-SHING; WU GUANG-ZHONG
权利人:SCHERING CORP
摘要:The invention relates to a process for preparing a compound of the formula ##STR1## comprising reacting a bromo-substituted pyridine with an amine of the formula NHR 5 R 6 , reacting the resulting amide with an iodo-halomethyl-substituted compound and cyclizing the resultant product, wherein R, R 1 , R 2 , R 3 and R 4 are as defined in the specification; also claimed are a compound of the formula ##STR2## and a process for preparing it from the corresponding halo-substituted benzoic acid.
专利号:EP-0977739-B1
优先权日:1997-03-25
标题 :Synthesis of intermediates useful in preparing tricyclic compounds
发明人:CHEN XING; POIRIER MARC; WONG YEE-SHING; WU GUANG-ZHONG
权利人:SCHERING CORP
摘要:The invention relates to a process for preparing a compound of formula (I), comprising reacting a bromo-substituted pyridine with an amine of the formula NHR5R6, reacting the resulting amide with an iodo-halomethyl-substituted compound and cyclizing the resultant product, wherein R, R 1, R2, R3 and R4¿ are as defined in the specification; also claimed are a compound of formula (a), and a process for preparing it from the corresponding halo-substituted benzoic acid.
专利号:CA-2284646-C
优先权日:1997-03-25
标 题 :Synthesis of intermediates useful in preparing tricyclic compounds
专利号:DE-69819316-T2
优先权日:1997-03-25
标题:SYNTHESIS OF INTERMEDIATE PRODUCTS APPLICABLE IN THE PRODUCTION OF TRICYCLIC COMPOUNDS
专利号:RU-2026284-C1
优先权日:1991-06-14
标题:Method of synthesis of alkyl esters of 3-chloroanthranilic acid