37830-90-3 = 80841-78-7 + 95579-71-8 反应条件:1.1 Reagents: Trichloroisocyanuric Acid Solvents: 1,2-Dichloroethane; 2 H,Reflux 标题:Preparation Of High-Purity 4-Chloromethyl-5-Methyl-1,3-Dioxolen-2-One From 4,5-Dimethyl-1,3-Dioxolen-2-One 参考文献:Japan
4,5-二甲基-1,3-二氧杂环戊烯-2-酮置于n-氯代丁二酰亚胺体系中,用 四氯化碳 作为反应溶剂,化学反应 80.0H,以9.2%的收率获得产物4-氯甲基-5-甲基-1,3-二氧杂环戊烯-2-酮 参考文献:Studies On Prodrugs. Ii. Preparation And Characterization Of (5-Substituted 2-Oxo-1,3-Dioxolen-4-yl)Methyl Esters Of Ampicillin. 标题:Studies On Prodrugs. Ii. Preparation And Characterization Of (5-Substituted 2-Oxo-1,3-Dioxolen-4-yl)Methyl Esters Of Ampicillin. 摘要:(5-取代的2-氧基-1,3-二恶烷-4-基)甲酸酯被设计为一种新型的青霉素前药.这些酯类化合物的制备经过确认,在小鼠口服给药后能产生比青霉素三水合物本身更高的血药浓度.那些能显著提高青霉素血药浓度的化合物在体外血液中容易水解.青霉素(5-甲基-2-氧基-1,3-二恶烷-4-基)甲酸酯盐酸盐(kbt-1585)在小鼠中显示出最佳的口服吸收性. DOI:10.1248/cpb.32.2241
专利号:CN-111285837-A 优先权日:2020-03-05 标 题:Method for catalytic synthesis of high-purity 4-chloromethyl-5-methyl-1, 3-dioxol-2-one
专利号:US-4554358-A 优先权日:1983-06-14 标 题:4-Chloro-4-methyl-5-methylene-1,3-dioxolane-2-one 发明人:TAKEBE YASUSHI; IUCHI KOJI; TSUKAMOTO GORO 权利人:KANEBO LTD 摘要:4-Chloro-4-methyl-5-methylene-1,3-dioxolane-2-one is useful as an intermediate for the synthesis of 4-chloromethyl-5-methyl-1,3-dioxolene-2-one which, in turn, finds use as a modifying agent for making various prodrugs. n Said intermediate compound gives said objective compound in a good yield by a rearrangement reaction.
专利号:CN-119039279-A 优先权日:2024-08-15 标题 :A kind of synthesis process of trityl olmesartan medoxomil
专利号:CN-112321559-A 优先权日:2020-10-27 标题:A kind of chemical synthesis method of 4-chloromethyl-5-methyl-1,3-dioxol-2-one
专利号:KR-101526249-B1 优先权日:2013-11-14 标题 :Improved synthesis process of olmesartan medoxomil derivatives
专利号:KR-20150055874-A 优先权日:2013-11-14 标 题 :Improved synthesis process of olmesartan medoxomil derivatives
[参考文献]: Iwona Dams, Et Al. Synthesis And Physicochemical Characterization Of The Process-Related Impurities Of Olmesartan Medoxomil. Do 5-(Biphenyl-2-Yl)-1-Triphenylmethyltetrazole Intermediates In Sartan Syntheses Exist. Molecules. 2015 Dec 1;20(12):21346-63.
合成参考文献
摘要:Wu TZ, Liu XH, Zhang FL, Xie MH. [A novel synthesis of olmesartan medoxomil and examination of its related impurities]. Yao Xue Xue Bao. 2006 Jun;41(6):537–43.