CAS: 7758-09-0; Potassium Nitrite

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CAS号584-08-7 碳酸钾 | CAS号13444-87-6 nitrosyl bromide | CAS号10102-43-9 一氧化氮 | CAS号7632-00-0 亚硝酸钠 | CAS号13536-70-4 nitryl bromide | CAS号7558-02-3 2(1H)-Pyrimidin... | CAS号7440-09-7 钾离子标准溶液 | CAS号10024-97-2 笑气 | CAS号75-52-5 硝基甲烷 | CAS号298-14-6 碳酸氢钾 | CAS号624-91-9 亚硝酸甲酯 | CAS号2386-56-3 甲基磺酸钾 | CAS号7803-49-8 羟胺 | CAS号7664-41-7 氨 | CAS号19467-31-3 trans-hyponitro... | CAS号590-28-3 氰酸钾 | CAS号5470-11-1 盐酸羟胺 | CAS号15421-15-5 potassium,(2R)-...

专利信息

专利号:US-11040938-B2
优先权日:2016-07-27
标 题 :Continuous flow process for the synthesis of phenylhydrazine salts and substituted phenylhydrazine salts
发明人：MA BING; PAN SHUAI
权利人:SHANGHAI HYBRID—CHEM TECH; SHANGHAI HYBRID CHEM TECH
摘要:The present invention provided a continuous flow process for the synthesis of phenylhydrazine salts and substituted phenylhydrazine salts. Diazotization, reduction, acidic hydrolysis and salifying with acids are innovatively integrated together. Using acidic liquids of aniline or substituted aniline, diazotization reagents, reductants and acids as raw materials, phenylhydrazine derivative salts is obtained through the synthesis process, which is a three-step continuous tandem reaction including diazotization, reduction, acidic hydrolysis and salifying. The described synthesis process is a kind of integrated solutions, which is carried out in an integrated reactor. The feed inlets of the integrated reactor are continuously filled with raw materials. In the integrated reactor, diazotization, reduction, acidic hydrolysis and salifying are carried out continuously and orderly, and phenylhydrazine salts or substituted phenylhydrazine salts is obtained in the outlet of the integrated reactor without interruption. The total reaction time is no more than 20 min.

专利号:US-11639349-B2
优先权日:2020-05-28
标题:Stereoselective synthesis of intermediate for preparation of heterocyclic compound
发明人：CHEN WEN-CHANG; HSU HAN-PEI; CHOU SHAN-YEN; CHUANG SHIH-CHIEH; YEN CHI-FENG
权利人:TAI GEN BIOTECHNOLOGY CO LTD; TAIGEN BIOPHARMACEUTICALS CO BEIJING LTD; TAIGEN BIOTECHNOLOGY CO LTD
摘要:Provided is a stereoselective synthesis of an intermediate for the preparation of the heterocyclic derivative as a Cap-dependent endonuclease inhibitor. The synthesis process has the advantages of simple operation, higher yield and relatively controllable steroselectivity, such that it is suitable for large-scale production.

专利号:US-8785656-B2
优先权日:2012-02-16
标 题:Telescoping synthesis of 5-amino-4-nitroso-1-alkyl-1H-pyrazole salt
发明人：GEIBEL WOLFRAM; WEBER INGO; OSAN ARMIN; SPECKBACHER MARKUS
权利人:PROCTER & GAMBLE
摘要:A telescoping synthesis of 5-amino-4-nitroso-1-alkyl-1H-pyrazole salt derivatives of formula (I), the compound (I) itself, and its use as an intermediate in the fabrication of 1-alkyl-4,5-diaminopyrazole salts of general formula (IX). The compounds of formula (IX) can be used as precursor dyes in oxidative hair dye compositions. n n n n n n n n n n R is a mono- or poly-substituted or unsubstituted, straight or branched, saturated or mono- or poly-unsaturated, alkyl group. HZ and HZ′ are organic or mineral acids.

专利号:US-12281398-B2
优先权日:2022-02-07
标题:Microfluidic process for the general electrochemical synthesis of geminal dipseudohalide or halide-pseudohalide compounds
发明人：SCHROER THORSTEN G; LECROY GREGORY E; AGUILA MIGUEL; RODRIGUEZ MAYRA P; DOWNARD TYLER J; MACLEOD BRIANNA L
权利人:US GOV AIR FORCE; US AIR FORCE
摘要:A process for the microfluidic electrochemical synthesis of geminal dipseudohalide or halide-pseudohalide compounds comprising the steps ofpumping a solution comprising a compound of Formula Iinto a microfluidic electrochemical reactor in the presence of a base, one of a halide or pseudohalide salt (MY), and a mediator;applying an electrical current through the microfluidic electrochemical reactor; andperforming oxidative addition to create a geminal dipseudohalide or halide-pseudohalide compound of the general Formula II

专利号:US-5180824-A
优先权日:1990-11-29
标题 :6-azido-2-fluoropurine, useful in the synthesis of nucleosides
发明人：BAUMAN JOHN G; WIRSCHING RANDOLPH C
权利人:BERLEX BIOSCIENCES INC
摘要:This invention pertains to novel methods of synthesizing fludarabine, fludarabine phosphate and related nucleoside pharmacologic agents utilizing 6-azido-2-fluoropurine as a novel intermediate. n In particular this invention pertains to a synthesis of fludarabine where the relatively low yield fluorination step is done before the costly coupling step.

专利号:US-4581416-A
优先权日:1981-01-19
标题 :Process for the synthesis of tertiary phosphine oxides and sulfides, and new tertiary phosphine oxides and sulfides
发明人：BERGERET WILFRID; BOILEAU SYLVIE; GAUTIER JEAN-CLAUDE; RAYNAL SERGE
权利人:POUDRES & EXPLOSIFS STE NALE
摘要:The invention relates to processes for the synthesis of tertiary phosphine oxides and sulfides. The process according to the invention consists, in a first step, of reacting a secondary phosphine oxide or sulfide with an optionally activated alkali metal amide, and, in a second step, of reacting the mixture obtained in the first step with an organic halide containing at least one halogenophenyl radical or one halogenomethyl group. Tertiary phosphine oxides and sulfides are complexing agents of high stability.