27532-96-3 + 1013-88-3 = 81477-94-3 反应条件:1.1 Solvents: Dichloromethane; Rt 标题:Access To α,α-Disubstituted Disilylated Amino Acids And Their Use In Solid-Phase Peptide Synthesis 作者:Fanelli,Roberto; Et Al 参考文献:Organic Letters 日期:2015 卷标:17(18) 页码:4498-4501]
119-61-9 + 27532-96-3 = 81477-94-3 反应条件:1.1 Solvents: Dichloromethane; 2 H,Rt 标题:Expedient Synthesis Of Fmoc-(S)-γ-Fluoroleucine And Late-Stage Fluorination Of Peptides 作者:Fanelli,Roberto; Et Al 参考文献:Synlett 日期:2016 卷标:27(9) 页码:1403-1407]
1013-88-3 + 107-59-5 = 81477-94-3 反应条件:1.1 Reagents: Potassium Carbonate Catalysts: 2,6-Lutidine; 20 Min,120 °C 标题:Microwave-Promoted Solvent-Free Synthesis Of N-(Diphenylmethylene)Glycine Alkyl Esters 作者:Wang,Quan Jun; Et Al 参考文献:Chinese Chemical Letters 日期:2009 卷标:20(12) 页码:1405-1407]
1013-88-3 + 107-59-5 = 81477-94-3 反应条件:1.1 Reagents: Potassium Carbonate; 130 °C 标题:Tert-Butyl N-(Diphenylmethylene)Glycinate 作者:Shirakawa,Seiji; Et Al 参考文献:E-Eros Encyclopedia Of Reagents For Organic Synthesis 日期:2011 卷标:1 页码:1-3]
6456-74-2 + 1013-88-3 = 81477-94-3 反应条件:1.1 Solvents: Dichloromethane; Rt 标题:Mechanistic Study Of Ni And Cu Dual Catalyst For Asymmetric C-C Bond Formation; Asymmetric Coupling Of 1,3-Dienes With C-Nucleophiles To Construct Vicinal Stereocenters 作者:Xia,Jingzhao; Et Al 参考文献:Acs Catalysis 日期:2021 卷标:11(11) 页码:6643-6655]
35000-38-5 + 1013-88-3 = 81477-94-3 反应条件:1.1 Reagents: Diisopropylethylamine Solvents: Acetonitrile; 12 H,Reflux 标题:Total Synthesis Of Cryptophycin 3 作者:Danner,Paulami; Et Al 参考文献:European Journal Of Organic Chemistry 日期:2005 卷标:(2) 页码:317-325]
119-61-9 + 6456-74-2 = 81477-94-3 反应条件:1.1 Reagents: Boron Trifluoride Etherate Solvents: Toluene; 8 H,130 °C 标题:Design,Synthesis,And Functional Assessment Of Cmpd-15 Derivatives As Negative Allosteric Modulators For The β2-Adrenergic Receptor 作者:Meng,Kaicheng; Et Al 参考文献:Bioorganic & Medicinal Chemistry 日期:2018 卷标:26(9) 页码:2320-2330]
16874-17-2 + 1013-88-3 = 81477-94-3 反应条件:1.1 Solvents: Dichloromethane; 48 H,Rt 标题:A Rapid And Highly Enantioselective C-11C Bond Formation Of L-[11C]Phenylalanine Via Chiral Phase-Transfer Catalysis 作者:Pekosak,Aleksandra; Et Al 参考文献:Organic & Biomolecular Chemistry 日期:2017 卷标:15(3) 页码:570-575]
= 81477-94-3 反应条件:1.1 Solvents: Diethyl Ether2.1 Reagents: Potassium Carbonate Solvents: 2-Pyrrolidone 标题:Novel Cinchona Alkaloid Derived Ammonium Salts As Phase-Transfer Catalysts For The Asymmetric Synthesis Of Beta-Hydroxy Alpha-Amino Acids Via Aldol Reactions And Total Synthesis Of Celogentin C 作者:Ma,Bing 参考文献:2009 卷标:70(9)]
= 81477-94-3 反应条件:1.1 Solvents: Diethyl Ether; Rt -> Reflux; 4 - 6 H,Reflux; Reflux -> Rt2.1 Reagents: Methanol; 0.5 H,Rt3.1 Solvents: Dichloromethane; 24 H,Rt 标题:Sulfuration Reaction Of Glycine Tert-Butyl Ester Derivatives By Phase Transfer Catalysis 作者:Lu,Xieqin; Et Al 参考文献:Hebei Yiyao 日期:2012 卷标:34(7) 页码:1075-1077]
119-61-9 = 81477-94-3 反应条件:1.1 Reagents: Hexamethyldisilazane Catalysts: Scandium Triflate Solvents: Chlorobenzene; Rt; 12 H,90 °C2.1 Solvents: Dichloromethane; 6 H,Rt 标题:Scandium(Iii) Triflate Catalyzed Direct Synthesis Of N-Unprotected Ketimines 作者:Kondo,Yuta; Et Al 参考文献:Organic Letters 日期:2020 卷标:22(1) 页码:120-125]
= 81477-94-3 反应条件:1.1 Reagents: Methanol; 0.5 H,Rt2.1 Solvents: Dichloromethane; 24 H,Rt 标题:Sulfuration Reaction Of Glycine Tert-Butyl Ester Derivatives By Phase Transfer Catalysis 作者:Lu,Xieqin; Et Al 参考文献:Hebei Yiyao 日期:2012 卷标:34(7) 页码:1075-1077]
= 81477-94-3 反应条件:1.1 Reagents: Ammonia Solvents: Diethyl Ether; 2 H,-40 °C; -40 °C -> Rt; Overnight,Rt2.1 Solvents: Dichloromethane; 24 H,Rt 标题:Preparation And Characterization Of [5-13C]-(2S,4R)-Leucine And [4-13C]-(2S,3S)-Valine - Establishing Synthetic Schemes To Prepare Any Site-Directed Isotopomer Of L-Leucine,L-Isoleucine And L-Valine 作者:Siebum,Arjan H. G.; Et Al 参考文献:European Journal Of Organic Chemistry 日期:2003 卷标:(23) 页码:4664-4678]
91-00-9 = 81477-94-3 反应条件:1.1 Reagents: Sodium Hydroxide,Potassium Persulfate,Nickel Sulfate (Niso4) Solvents: Dichloromethane,Water2.1 Reagents: Diisopropylethylamine Solvents: Acetonitrile 标题:A New Total Synthetic Pathway To Cryptophycin-3 And An Analogue As Well As An Efficient Approach To The Total Synthesis Of The Proteasome Inhibitor Epoxomicin 作者:Danner,Paulami 参考文献:2007]
1138-80-3 = 81477-94-3 反应条件:1.1 Reagents: Potassium Carbonate Catalysts: Benzyltriethylammonium Chloride Solvents: Dimethylacetamide; 24 H,55 °C2.1 Reagents: Hydrogen Catalysts: Palladium Solvents: Ethanol3.1 Solvents: Dichloromethane; 24 H,Rt 标题:Preparation And Characterization Of [5-13C]-(2S,4R)-Leucine And [4-13C]-(2S,3S)-Valine - Establishing Synthetic Schemes To Prepare Any Site-Directed Isotopomer Of L-Leucine,L-Isoleucine And L-Valine 作者:Siebum,Arjan H. G.; Et Al 参考文献:European Journal Of Organic Chemistry 日期:2003 卷标:(23) 页码:4664-4678]
27532-96-3 + 1013-88-3 = 81477-94-3 反应条件:1.1 Solvents: Dichloromethane; 24 H,Rt 标题:Stereoselective Synthesis Of Unsaturated α-Amino Acids 作者:Fanelli,Roberto; Et Al 参考文献:Amino Acids 日期:2015 卷标:47(6) 页码:1107-1115]
119-61-9 + 27532-96-3 = 81477-94-3 反应条件:1.1 Reagents: Hexamethyldisilazane Catalysts: Scandium Triflate Solvents: Chlorobenzene; Rt; 24 H,90 °C1.2 Solvents: Dichloromethane; 6 H,Rt 标题:Scandium(Iii) Triflate Catalyzed Direct Synthesis Of N-Unprotected Ketimines 作者:Kondo,Yuta; Et Al 参考文献:Organic Letters 日期:2020 卷标:22(1) 页码:120-125]
1013-88-3 = 81477-94-3 反应条件:1.1 Reagents: Diisopropylethylamine Solvents: Acetonitrile 标题:A New Total Synthetic Pathway To Cryptophycin-3 And An Analogue As Well As An Efficient Approach To The Total Synthesis Of The Proteasome Inhibitor Epoxomicin 作者:Danner,Paulami 参考文献:2007]
6456-74-2 + 1013-88-3 = 81477-94-3 反应条件:1.1 Solvents: Dichloromethane; 24 H,Rt 标题:Preparation And Characterization Of [5-13C]-(2S,4R)-Leucine And [4-13C]-(2S,3S)-Valine - Establishing Synthetic Schemes To Prepare Any Site-Directed Isotopomer Of L-Leucine,L-Isoleucine And L-Valine 作者:Siebum,Arjan H. G.; Et Al 参考文献:European Journal Of Organic Chemistry 日期:2003 卷标:(23) 页码:4664-4678]
119-61-9 + 6456-74-2 = 81477-94-3 反应条件:1.1 Catalysts: Boron Trifluoride Etherate Solvents: Toluene 标题:Synthesis Of Racemic [3-11C]-Labeled Alanine,2-Aminobutyric Acid,Norvaline,Norleucine,Leucine And Phenylalanine And Preparation Of L-[3-11C]Alanine And L-[3-11C]Phenylalanine 作者:Antoni,Gunnar; Et Al 参考文献:Journal Of Labelled Compounds And Radiopharmaceuticals 日期:1987 卷标:24(2) 页码:125-43]
16881-32-6 = 81477-94-3 反应条件:1.1 Reagents: Hydrogen Catalysts: Palladium Solvents: Ethanol2.1 Solvents: Dichloromethane; 24 H,Rt 标题:Preparation And Characterization Of [5-13C]-(2S,4R)-Leucine And [4-13C]-(2S,3S)-Valine - Establishing Synthetic Schemes To Prepare Any Site-Directed Isotopomer Of L-Leucine,L-Isoleucine And L-Valine 作者:Siebum,Arjan H. G.; Et Al 参考文献:European Journal Of Organic Chemistry 日期:2003 卷标:(23) 页码:4664-4678]
6456-74-2 = 81477-94-3 反应条件:1.1 Reagents: Hydrochloric Acid Solvents: Dichloromethane; Rt2.1 Solvents: Dichloromethane; 24 H,Rt 标题:Sulfuration Reaction Of Glycine Tert-Butyl Ester Derivatives By Phase Transfer Catalysis 作者:Lu,Xieqin; Et Al 参考文献:Hebei Yiyao 日期:2012 卷标:34(7) 页码:1075-1077
专利号:US-5554753-A 优先权日:1993-08-25 标 题:Catalytic enantioselective synthesis of α-amino acid derivatives by phase-transfer catalysis 发明人:O'DONNELL MARTIN J; WU SHENGDE; ESIKOVA IRENA; MI AIQIAO 权利人:INDIANA UNIVERSITY FOUNDATION 摘要:Described are improved processes for the enantioselective synthesis of α-amino acids which involve combinations of solvents, highly-mixed and low-temperature reaction conditions, and novel catalysts. Also described are novel catalysts and precursors to α-amino acid derivatives.
专利号:US-8324417-B2 优先权日:2009-08-19 标题:Process for the preparation of (S)-2-amino-5-cyclopropyl-4,4-difluoropentanoic acid and alkyl esters and acid salts thereof 发明人:HART BARRY; DENER JEFF; GREEN MICHAEL; STANDEN MICHAEL; KOCIAN OLDRICH 权利人:HART BARRY; DENER JEFF; GREEN MICHAEL; STANDEN MICHAEL; KOCIAN OLDRICH; VIROBAY INC 摘要:The present invention relates to a process for the preparation of alkyl esters of (S)-2-amino-5-cyclopropyl-4,4-difluoropentanoic acid, which are intermediates useful in the synthesis of (S)—N-(1-cyanocyclopropyl)-5-cyclopropyl-4,4-difluoro-2-((S)-2,2,2-trifluoro-1-(4-fluorophenyl)ethylamino)pentanamide and related compounds, which are compounds that are cysteine protease inhibitors.
专利号:US-2016073631-A1 优先权日:2013-03-04 标 题 :Process for the preparation of dihydropyrrole derivatives 发明人:EL QACEMI MYRIEM; SMITS HELMARS; CASSAYRE JEROME YVES; MULHOLLAND NICHOLAS PHILLIP; RENOLD PETER; GODINEAU EDOUARD; PITTERNA THOMAS 权利人:SYNGENTA PARTICIPATIONS AG; SYNGENTA LTD 摘要:The present invention provides stereoselective processes for the preparation of compounds of formula (I) n n n n n n n n n n n n wherein n P is phenyl, naphthyl, a 6-membered heteroaryl group containing one or two nitrogen atoms as ring members, or a 10-membered bicyclic heteroaryl group containing one or two nitrogen atoms as ring members, and wherein the phenyl, naphthyl and heteroaryl groups are optionally substituted; n R 1 is chlorodifluoromethyl or trifluoromethyl; n R 2 is optionally substituted aryl or optionally substituted heteroaryl; n n is 0 or 1; n including the process comprising n (a-i) reacting a compound of formula II n n n n n n n n n n n n n n n n wherein P, R 1 and R 2 are as defined for the compound of formula I; n with nitromethane in the presence a chiral catalyst to give a compound of formula III n n n n n n n n n n n n n n n n wherein P, R 1 and R 2 are as defined for the compound of formula I; and n (a-ii) reductively cyclising the compound of formula III to give the compound of formula I. n n n n n The invention also provides intermediates useful for processes for the synthesis of compounds of formula (I).
专利号:US-9233920-B2 优先权日:2010-06-11 标题 :Process for the preparation of dihydropyrrole derivatives 发明人:EL QACEMI MYRIEM; SMITS HELMARS; CASSAYRE JEROME YVES; MULHOLLAND NICHOLAS PHILLIP; RENOLD PETER; GODINEAU EDOUARD; PITTERNA THOMAS 权利人:EL QACEMI MYRIEM; SMITS HELMARS; CASSAYRE JEROME YVES; MULHOLLAND NICHOLAS PHILLIP; RENOLD PETER; GODINEAU EDOUARD; PITTERNA THOMAS; SYNGENTA PARTICIPATIONS AG; SYNGENTA LTD 摘要:The present invention provides stereoselective processes for the preparation of compounds of formula (I) wherein P is phenyl, naphthyl, a 6-membered heteroaryl group containing one or two nitrogen atoms as ring members, or a 10-membered bicyclic heteroaryl group containing one or two nitrogen atoms as ring members, and wherein the phenyl, naphthyl and heteroaryl groups are optionally substituted; R 1 is chlorodifluoromethyl or trifluoromethyl; R 2 is optionally substituted aryl or optionally substituted heteroaryl; n is 0 or 1; including the process comprising (a-i) reacting a compound of formula II wherein P, R 1 and R 2 are as defined for the compound of formula I; with nitromethane in the presence a chiral catalyst to give a compound of formula III Wherein P, R 1 and R 2 are as defined for the compound of formula I; and (a-ii) reductively cyclizing the compound of formula III to give the compound of formula I. The invention also provides intermediates useful for processes for the synthesis of compounds of formula (I).
专利号:US-9796641-B2 优先权日:2013-03-22 标 题:Stabilization of radiosynthetic intermediates 发明人:OTABASHI MUHAMMAD; PHILIPPART GAUTHIER; VOCCIA SAMUEL; WOUTERS LUDOVIC; MORELLE JEAN-LUC 权利人:TRASIS S A 摘要:The present invention relates to a method for stabilizing radiosynthetic intermediates used in synthesis of 18 F radiolabeled aromatic amino acid derivatives toward decomposition caused by beta and gamma radiations by the use of radical scavengers and/or reductants and/or antioxidants.
专利号:US-10730037-B2 优先权日:2015-12-25 标题:Compound and method for manufacturing organic material 发明人:MIYAZAWA TAKASHI; SAKAGUCHI KEN-ICHI 权利人:TOYO GOSEI CO LTD 摘要:Synthesis of organic compounds that has chirality is an important technique in the fields of pharmaceuticals, agrichemicals, health foods and the like. However, raw materials of a catalyst used for the synthesis of such compounds are expensive, and the synthesis needs many steps, so that it is difficult to reduce the cost. Linking a catalyst center to a polymer chain or a resin through an organic group enables to use the catalyst repeatedly and produce a chiral compound at low cost.
参考文献:10.1021/ja909972d 摘要:Itsuno S, Paul DK, Salam MA, Haraguchi N. Main-chain ionic chiral polymers: synthesis of optically active quaternary ammonium sulfonate polymers and their application in asymmetric catalysis. J Am Chem Soc. 2010 Mar 10;132(9):2864–5. doi: 10.1021/ja909972d.