CAS: 105-46-4; Dl-Sec-Butyl Acetate

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CAS号108-24-7 乙酸酐 | CAS号78-92-2 仲丁醇 | CAS号78-86-4 2-氯丁烷 | CAS号143314-17-4 1-乙基-3-甲基咪唑乙酸盐 | CAS号78-76-2 溴代仲丁烷 | CAS号107-01-7 2-丁烯 | CAS号64-19-7 冰醋酸 | CAS号565-61-7 3-甲基-2-戊酮 | CAS号106-98-9 正丁烯 | CAS号75-36-5 乙酰氯 | CAS号106-98-9 正丁烯 | CAS号590-18-1 顺-2-丁烯 | CAS号624-64-6 反-2-丁烯 | CAS号107-01-7 2-丁烯 | CAS号64-19-7 冰醋酸 | CAS号187737-37-7 propene | CAS号54509-73-8 ethene | CAS号78-92-2 仲丁醇 | CAS号123-86-4 乙酸丁酯 | CAS号67-64-1 丙酮

3-甲基-2-戊酮置于tin,Magnesium Silicate Aluminate 双氧水体系中,用 1,4-二氧六环 用作溶剂,化学反应 24.0H,反应生成乙酸仲丁酯
参考文献:Sn-坡缕石催化过氧化氢对酮进行清洁,选择性的拜耳-维利格氧化
标题:Sn-坡缕石催化过氧化氢对酮进行清洁,选择性的拜耳-维利格氧化
摘要:介绍了一种对环境无害且选择性的baeyer-Villiger氧化系统.坡缕石负载的锡配合物是通过简单的程序制备的.在坡缕石负载的锡配合物催化的反应中,环酮和无环酮被过氧化氢氧化,得到相应的内酯或酯,对产物的选择性为90-99%.详细研究了溶剂,化学反应温度,催化剂用量和反应时间对催化活性和产物选择性的影响.该催化剂价格便宜,易于大规模制备并可回收利用.
Doi:10.1016/j.Jorganchem.2006.09.038

专利信息

专利号:US-6177564-B1
优先权日:1998-09-11
标题:Process for the synthesis of N-benzyl-3-(4-fluorophenyl)-1-4-oxazin-2-one
发明人：NELSON TODD D; BHUPATHY MAHADEVAN
权利人:MERCK & CO INC
摘要:The present invention is concerned with a novel process for the preparation of N-benzyl-3-(4-fluorophenyl)-1,4-oxazin-2-one of the formula:This compound is useful as an intermediate in the synthesis of compounds which possess pharmacological activity, in particular, as substance P (neurokinin-1) receptor antagonists.

专利号:US-7470370-B2
优先权日:2003-06-05
标 题 :Process for removal of impurities from mother liquor in the synthesis of carboxylic acid using pressure filtration
发明人：PARKER KENNY RANDOLPH; LIN ROBERT
权利人:EASTMAN CHEM CO
摘要:A process is disclosed that relates to the recovery of a metal catalyst from an oxidizer purge stream produced in the synthesis of carboxylic acid, typically terephthalic. More particularly, the process involves recovery of a metal catalyst from an oxidizer purge stream through the use of a pressure filter, the combining of water with a mother liquor to recover the metal catalyst and then subjecting an aqueous mixture so formed to a single stage extraction with an extraction solvent to produce an extract stream comprising organic impurities and a raffinate stream comprising the metal catalyst.

专利号:US-12351558-B2
优先权日:2020-04-17
标题 :Process for the synthesis of lofexidine
发明人：NG CHOI I-TENG MONTSERRAT
权利人:MEDICHEM SA
摘要:The present invention relates to an improved process for the synthesis of lofexidine, or a pharmaceutically acceptable salt thereof, using an aluminium alkoxide as Lewis acid.

专利号:US-7494641-B2
优先权日:2003-06-05
标题 :Extraction process for removal of impurities from an oxidizer purge stream in the synthesis of carboxylic acid
发明人：LIN ROBERT; DE VREEDE MARCEL
权利人:EASTMAN CHEM CO
摘要:Disclosed is a process that relates to the recovery of a metal catalyst from an oxidizer purge stream produced in the synthesis of carboxylic acid, typically terephthalic acid. The process involves the addition of a wash solution to a high temperature molten dispersion to recover the metal catalyst and then subjecting an aqueous mixture or purified aqueous mixture so formed to a single stage extraction to remove organic impurities to produce an extract stream and a raffinate stream comprising the metal catalyst.

专利号:US-7452522-B2
优先权日:2003-06-05
标 题 :Extraction process for removal of impurities from an oxidizer purge stream in the synthesis of carboxylic acid
发明人：LIN ROBERT; DE VREEDE MARCEL
权利人:EASTMAN CHEM CO
摘要:Disclosed is a process that relates to the recovery of a metal catalyst from an oxidizer purge stream produced in the synthesis of carboxylic acid, typically terephthalic acid. The process involves the addition of a wash solution to a high temperature molten dispersion to recover the metal catalyst and then subjecting an aqueous mixture or purified aqueous mixture so formed to a single stage extraction to remove organic impurities to produce an extract stream and a raffinate stream comprising the metal catalyst.

专利号:WO-2024110994-A1
优先权日:2022-11-25
标题 :A process for the preparation of ledipasvir
发明人：GANGARAJULA SUDHAKAR; CHENNAM RAMU; KUMARAGURU THENKRISHNAN; BABURAO RODE HARIDAS; MADDI REDDY SRIDHAR; CHADA REDDY RAJI; GHOSH SUBHASH
权利人:COUNCIL OF SCIENT AND INDUSTRIAL RESEARCH AN INDIAN REGISTERED BODY INCORPORATED UNDER THE REGN OF S
摘要:The present disclosure relates to process for the preparation of Ledipasvir (I) or of its pharmaceutically acceptable salts. The present disclosure also provides novel intermediates (IV–XI) that are used in the synthesis of Ledipasvir. The main strategies of the present invention are late-stage functionalization such as difluorination and cyclopropanation of the key intermediates of Ledipasvir (I). (Formula (I))