📜亚硫酸二甲酯,四丁基溴化铵 110.0~115.0 °C,150.0 Kpa 条件下,反应 96.0H,以100%的收率获得产物甲基磺酸四丁基铵 参考文献:Process For The Preparation Of Onium Alkylsulfonates 标题:Process For The Preparation Of Onium Alkylsulfonates 摘要:该发明涉及一种通过在50至170oc温度下将一个铵盐卤化物或羧酸盐与对称取代的二烷基亚磺酸酯或不对称取代的二烷基亚磺酸酯反应制备亚磺酸铵盐的方法.
专利号:US-4334079-A 优先权日:1980-11-03 标 题:Synthesis of substituted benzyl esters 发明人:GREENE JAMES M; BUNNELL CHARLES A 权利人:LILLY CO ELI 摘要:A process for preparing certain substituted benzyl esters of phenylacetic acids by esterification in a solvent in which the salt of the acid is insoluble, and in the presence of a phase transfer catalyst.
专利号:US-4950368-A 优先权日:1989-04-10 标 题 :Method for paired electrochemical synthesis with simultaneous production of ethylene glycol 发明人:WEINBERG NORMAN L; GENDERS JOHN D; MAZUR DUANE J 权利人:ELECTROSYNTHESIS CO INC; SKA ASS 摘要:Paired electrochemical synthesis reactions in which ethylene glycol is formed at the cathode of a membrane divided cell at high concentrations and current efficiencies, up to 99 percent. Simultaneously, a compatible process is also conducted at the anode of the same electrochemical cell by reacting indirectly generated anode products with organic substrates to form secondary products, such as polybasic acids. The process is especially advantageous in that such secondary products, where appropriate can be further reacted with the ethylene glycol prepared from the catholyte of the same cell to form useful tertiary products, especially polyesters like polyethylene terephthalate. Mole ratios of ethylene glycol and polybasic acid can be controlled through selective use of regeneratable redox reactant.
专利号:US-9505799-B2 优先权日:2011-05-13 标题:18F-labeled precursor of PET radioactive medical supplies, and preparation method thereof 发明人:CHI DAE-YOON; LEE BYOUNG-SE; PARK CHANSOO; LEE MIN-HYUNG; CHA HYOJIN; CHO WOOJIN; KANG HEEWON; KIM KYUNGHUN 权利人:CHI DAE-YOON; LEE BYOUNG-SE; PARK CHANSOO; LEE MIN-HYUNG; CHA HYOJIN; CHO WOOJIN; KANG HEEWON; KIM KYUNGHUN; FUTURECHEM CO LTD 摘要:The present invention relates to a precursor of positron emission tomography (PET) radioactive medical supplies, a preparation method thereof, and an application thereof, and more specifically, to a precursor having a tetravalent organic salt leaving group, a preparation method, and a method for preparing desired PET radioactive medical supplies in a high radiochemical yield within a short preparation time by introducing 18 F using the same through a single step. The precursor having a tetravalent organic salt leaving group of the present invention can simplify the known complex multistep preparation of radioactive medical supplies into a single step, can save production costs because an excessive amount of a phase transfer catalyst is not required, facilitates separation of a compound after reaction, and enables rapid reaction velocity. The features are appropriate for the mass production of PET radioactive medical supplies by an automated synthesis system.
专利号:CN-115087647-A 优先权日:2018-12-07 标 题:For the preparation of 4-(2-Chloro-4-methoxy-5-methylphenyl)-N-[(1S)-2-cyclopropyl-1-(3-fluoro-4-methylphenyl) ) ethyl]-5-methyl-N-prop-2-ynyl-1,3-thiazol-2-amine synthesis method
专利号:EP-0392370-A2 优先权日:1989-04-10 标 题 :Method for paired electrochemical synthesis with simultaneous production of ethylene glycol
专利号:CA-2014055-A1 优先权日:1989-04-10 标题 :Methods for paired electrochemical synthesis with simultaneous production of ethylene glycol