CAS: 5350-41-4; N,N,N-Trimethyl-1-Phenylmethanaminium Bromide

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CAS号3459-92-5 碳酸二苄酯 | CAS号2840-24-6 N,N-dimethylmet... | CAS号103-83-3 N,N-二甲基苄胺 | CAS号74-83-9 溴甲烷 | CAS号100-39-0 溴化苄 | CAS号75-50-3 三甲胺 | CAS号6134-56-1 6-溴-1,2,3,4-四氢-萘 | CAS号103-49-1 二苄胺 | CAS号75-50-3 三甲胺 | CAS号716-79-0 2-苯基苯并咪唑 | CAS号1520-42-9 1,1,2-三苯乙烷 | CAS号2449-49-2 N,N-二甲基-1-苯乙胺 | CAS号103-83-3 N,N-二甲基苄胺 | CAS号57455-05-7 benzyl trideute... | CAS号6427-70-9 苄基三甲基六氟磷酸铵 | CAS号538-74-9 二苄基硫醚

二苄基碳酸盐[脂],三甲胺氢溴酸盐置于1-Ethyl-3-Methylimidazolium Bromide体系中,化学反应 8.0H,以72%的收率获得产物苄基三甲基溴化铵
参考文献:咪唑基离子液体催化剂催化铵盐的烷基化
标题:咪唑基离子液体催化剂催化铵盐的烷基化
摘要:在咪唑鎓离子液体催化剂上由铵盐和碳酸二烷基酯合成季铵盐.该反应产生了几乎化学计量的用于卤化物和硝酸盐的季铵盐.发现铵阳离子的烷基部分的供电子性,碳酸盐烷基的亲电子性质,铵盐的阴离子所对应的酸的酸度以及铵的空间位阻.盐和碳酸二烷基酯是影响季铵盐收率的关键因素.铵盐氮原子上的强供电子烷基,碳酸二烷基酯的亚甲基碳上的吸电子基团,
DOI:10.1002/adsc.200600451

专利信息

专利号:US-8975340-B2
优先权日:2010-12-15
标题 :Synthesis of sequestration resins for water treatment in light water reactors
发明人：YENGOYAN LEON; FRATTINI PAUL L; WELLS DANIEL MORGAN
权利人:YENGOYAN LEON; FRATTINI PAUL L; WELLS DANIEL MORGAN; ELECTRIC POWER RES INST
摘要:An organic synthesis of materials to achieve removal of low molecular weight ionic species, such as transition metal ions including cobalt, iron, nickel, and zinc, from aqueous solutions. The synthesis includes the steps of providing a cation exchange resin, functionalizing the cation exchange resin using a chloride intermediate to form a sulfonyl chloride resin, and reacting a multi-amine based ligand with the sulfonyl chloride resin to form a sequestration resin. The synthesis further includes the steps of cooling the sequestration resin, and washing and drying the sequestration resin.

专利号:US-2008103312-A1
优先权日:2006-08-29
标 题:Processes for the synthesis of 5-phenyl-1-trityl-1H-tetrazole
发明人：KANSAL VINOD K; MISTRY DHIRENKUMAR N; VASOYA SANJAY L; LUNAGARIYA VIJAYKUMAR D
权利人:KANSAL VINOD K; MISTRY DHIRENKUMAR N; VASOYA SANJAY L; LUNAGARIYA VIJAYKUMAR D
摘要:Provided are processes for the synthesis of 5-phenyl-1-trityl-1H-tetrazole, an intermediate useful in the synthesis of irbesartan.

专利号:US-2003083352-A1
优先权日:2000-07-31
标 题 :Synthesis of imidazole intermediates
发明人：HELAL CHRISTOPHER J
权利人:PFIZER
摘要:The invention provides a method for synthesis of compounds of formula n n n wherein R 1 and R 19 are as defined. Compounds of formula 12 are useful as intermediates for synthesizing compounds having pharmacological activity inhibiting cdk5, cdk2, and GSK-3.

专利号:US-2009253746-A1
优先权日:2005-11-14
标题 :Synthesis and Preparations of Intermediates and New Polymorphs Thereof Useful For The Preparation Of Donepezil Hydrochlcoride
发明人：SOLDEVILLA MADRID NURIA
权利人:SOLDEVILLA MADRID NURIA
摘要:The invention relates to an improved process for preparing 2-(1-benzylpiperidin-4-ylmethyliden)-5,6-dimethoxyin-dan- 1 -one (a key intermediate in the synthesis of donepezil hydrochloride), crystalline polymorph forms of this key intermediate and their use thereof for producing donepezil hydrochloride. In particular, the invention provides an improved method for producing the intermediate 2-(1-benzylpiperidin-4-ylmethyliden)-5,6-dimethoxyindan-1-one. The process includes reacting 5,6-dimethoxyin-dan- 1 -one with 1-benzylpiperidine-4-carbaldehyde using potassium hydroxide in an aqueous solvent. The aqueous solvent can be a mixture of an organic solvent and water Where the organic solvent is not miscible with water, the reaction may be performed in the presence of a phase transfer catalyst.

专利号:US-6087512-A
优先权日:1996-09-18
标题:Process for preparation of glycidyl ether
发明人：FURUKAWA YOSHIRO; KITAORI KAZUHIRO; YANAGIMOTO TETSUYA; MIKAMI MASAFUMI; YOSHIMOTO HIROSHI; OTERA JUNZO
权利人:DAISO CO LTD
摘要:A process for preparation of a glycidyl ether which is characrelized in reacting an epoxy compound of the formula ##STR1## wherein X is halogen or sulfonyloxy in the presence of a fluoride salt, with an alcohol. According to the above method, glycigyl ethers or their optically active compounds important as intermediates for synthesis of medicines are easily obtained in good yield and especially the optically active compounds are obtained with highly optical purity.

专利号:US-6057476-A
优先权日:1996-09-18
标题:Process for the preparation of 3-amino-2-hydroxy-1-propyl ethers
发明人：FURUKAWA YOSHIRO; KITAORI KAZUHIRO; MIKAMI MASAFUMI; YOSHIMOTO HIROSHI; OTERA JUNZO
权利人:DAISO CO LTD
摘要:A process for preparation of 3-amino-2-hydroxy-1-propyl ether of the formula ##STR1## wherein R 1 is substituted or unsubstituted alkyl, substituted or unsubstituted aryl, or substituted or unsubstituted heterocyclic ring, R 2 and R 3 are the same or different hydrogen atom, a substituted or unsubstituted alkyl, or may form a ring together with an adjacent nitrogen atom, which ring may be interrupted with nitrogen atom, oxygen atom or sulfur atom, n which is characterized in reacting an epoxy compound of the formula ##STR2## wherein X is halogen, in the presence of a fluoride salt, with an alcohol and then reacting an amine. n According to the above method, an intermediates for synthesis of medicines is obtained in good yield and highly optical purity.