CAS: 10035-10-6; Hydrogen Bromide

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CAS号7726-95-6 溴素 | CAS号7789-31-3 溴酸 | CAS号7647-15-6 溴化钠 | CAS号119-64-2 1,2,3,4-四氢萘(THN) | CAS号7647-01-0 盐酸 | CAS号10294-33-4 三溴化硼 | CAS号7558-02-3 2(1H)-Pyrimidin... | CAS号5707-04-0 苯硒酰氯 | CAS号187544-74-7 (CO)2ReNH(CH3)C... | CAS号13172-31-1 二溴化二硫 | CAS号106092-67-5 dibromo-bis(2,4... | CAS号10288-13-8 1,2-二溴-3-甲基丁烷 | CAS号62127-60-0 2,2-dibromo-3-m... | CAS号10599-72-1 1,1-(2,5-二甲基呋喃-... | CAS号106835-04-5 3-bromo-N,N-dip... | CAS号74-89-5 氨基甲烷 | CAS号10595-51-4 Benzenamine,N-m... | CAS号6911-87-1 4-溴-N-甲基苯胺 | CAS号937-23-5 N-(4-bromopheny... | CAS号100-61-8 N-甲基苯胺

Potassium Hexabromopalladate (Iv)置于氢气体系中,用100%的收率获得氢溴酸
参考文献:Gutbier,A.; Krell,A.,Chemische Berichte,1905,Vol. 38,P. 2386-2386
标题:Gutbier,A.; Krell,A.,Chemische Berichte,1905,Vol. 38,P. 2386-2386

专利信息

专利号:WO-2021014395-A1
优先权日:2019-07-24
标题:Process for the synthesis of deuterated capsaicin, capsaicinoids and synthetic capsaicin analogs
发明人：ORUGANTI SRINIVAS; AMRUTAPU SRAVANTH KUMAR; SAMPATH MAGESH; SEN SAIKAT
权利人:DR REDDY’S INST OF LIFE SCIENCES
摘要:The present application provides novel processes for the synthesis of deuterated intermediates of capsaicinoids, particularly II, III, IV and V of capsaicinoids, relating to pharmaceutical applications. The invention also provides novel intermediates of compounds of formula IX, XIV, XV, XVI, XVII, XVIII, XX and XXI utilized in the process of making deuterated capsaicin II, III, IV and V.

专利号:US-5760237-A
优先权日:1995-08-25
标 题 :Synthesis of l-azatyrosine using pseudoephedrine as a chiral auxiliary
发明人：MYERS ANDREW G
权利人:CALIFORNIA INST OF TECHN
摘要:A practical synthesis of the potential chemotherapeutic agent L-azatyrosine is described. The key step involved the alkylation of (R,R)-(-)-pseudoephedrine glycinamide with 5-benzenesulfonyloxy-2-iodomethylpyridine and proceeded in 70-95% yield and 89-95% de. Simultaneous hydrolysis of the auxiliary and the benzenesulfonate protecting group afforded L-azatyrosine of ≧99% ee in 73% yield on multigram scale (recovery yield of (R,R)-(-)-pseudoephedrine: 90%).

专利号:WO-2013138200-A1
优先权日:2012-03-13
标 题 :Green chemistry synthesis of the malaria drug amodiaquine and analogs thereof
发明人：FORTUNAK JOSEPH MARIAN; KULKARNI AMOL ANANT; KING CHRISTOPHER
权利人:UNIV HOWARD
摘要:Methods are provided for a green chemistry one-pot synthesis of amodiaquine and amodiaquine analogs. The methods have a lower environmental impact, lower investment cost, reduced amounts of byproducts and impurities, and a shorter synthesis time, compared to current conventional synthesis methods. The methods reduce the total number of steps in the synthesis from four to five down to two, thereby simplifying production; and allow a reduced number of solvents and reagents to be used in production, thereby reducing the waste generated in the synthesis. The methods can reduce the waste to about 3-5 kilograms of waste generated per kilogram of product produced; and surprisingly improve the overall yield from 60-65% to greater than 90% as compared to the current conventional synthesis methods for amodiaquine and its analogs.

专利号:US-2024409495-A1
优先权日:2021-10-20
标 题 :Process for the preparation of 2,7-dihydroxy-9-fluorenone useful for the synthesis of tilorone and its salts
发明人：JAISANKAR PARASURAMAN; DEB INDUBHUSAN; BHATTACHARJEE PINAKI
权利人:COUNCIL SCIENT IND RES
摘要:Methods involving preparation of building blocks of 2,7-dihydroxy-9-fluorenone toward the synthesis of tilorone dihydrochloride salt and other salts (bromide, iodide, fluoride, citrate, oxalate, maleate, phosphate, tartrate, triflate, trifluoroacetate, tetrafluoroborate) of tilorone, and an efficient, safe, cost effective method for the preparation of 2,7-bis-[2-(diethylamino)ethoxy]-fluorenone-9 and its various salts are developed. The methods involve oxygenation of fluorene, nitration of fluorenone, followed by reduction and diazotization toward the formation of 2,7-dihydroxy-9-fluorenone, which is the key intermediate for the formation of 2,7-bis-[2-(diethylamino)ethoxy]-9-fluorenone-dihydrochloride (Tilorone dihydrochloride) and other tilorone salts. The synthesis method has relatively simple operation, mild reaction conditions, high yield, and simple process with yields of 80-97%. Subsequent product purification of this method uses filtration and crystallization methods, avoiding the existing methods of column chromatography. Therefore, the research of its synthetic method being with a wide range of applications from the drug development and material synthesis point of view.

专利号:US-11661406-B2
优先权日:2018-08-13
标 题 :Method for producing intermediate useful for synthesis of SGLT inhibitor
发明人：LI QING RI; YOON HEE KYOON
权利人:DAEWOONG PHARMACEUTICAL CO LTD
摘要:A method of preparing an intermediate useful for the synthesis of a diphenylmethane derivative that can be used as an SGLT inhibitor is described. A method of synthesizing a compound of Formula 7 can address problems of existing synthesis processes requiring the synthesis of the Grignard reagent and management of related substances. In addition, the method can minimize the generation of related substances, and thus does not require reprocessing of reaction products, thereby simplifying the process. Accordingly, the production yield of a diphenylmethane derivative can be maximized.

专利号:US-11891375-B2
优先权日:2021-07-26
标 题 :Method for the synthesis of 2,4-dimethylpyrimidin-5-ol, intermediates, and method for the synthesis of Lemborexant using the intermediates
发明人：AKHATOU ABDESLAM; DOBARRO RODRÃ?GUEZ ALICIA
权利人:MOEHS IBERICA SL
摘要:A method is for the synthesis of 2,4-dimethylpyrimidin-5-ol, which can be used as an intermediate compound in the synthesis of Lemborexant. The method includes reacting a nitrophenyl compound with N,N-dimethylformamide diethyl acetal.