CAS: 2167-38-6; 3-Methyloxetane

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三甲氧基酯 Trimethylene Oxide 503-30-0

📜1-乙酰氧基-3-氯-2-甲基丙烷置于氢氧化钾,Sodium Hydroxide体系中,用58%的收率获得3-甲基环氧丁烷
参考文献:Polyalkylene Ether Glycols
标题:Polyalkylene Ether Glycols
摘要:聚-2-甲基-1,3-丙烯醚甘油至少含有两个重复单元--Ch.Sub.2--Ch(Ch.Sub.3)--Ch.Sub.2--O--,两端带有羟基.它可用作聚酯和聚氨酯的软段组分,以及各个领域中的树脂材料.

专利信息

专利号:WO-2024137329-A1
优先权日:2022-12-20
标 题:Methods for the synthesis of complement factor d inhibitors and intermediates thereof
发明人：HASHIMOTO AKIHIRO; TIPPARAJU SURESH KUMAR
权利人:ALEXION PHARMA INC
摘要:The present disclosure provides methods for the synthesis of complement factor D inhibitors and intermediates thereof.

专利号:US-9695169-B2
优先权日:2012-05-31
标 题:Synthesis of heterocyclic compounds
发明人：IBRAHIM PRABHA N
权利人:PLEXXIKON INC
摘要:Provided herein are intermediates and processes useful for facile synthesis of biologically active molecules.

专利号:US-5498734-A
优先权日:1991-09-23
标 题:Preparation and use of (2-butene-1,4-diyl)magnesium complexes in organic synthesis
发明人：RIEKE REUBEN D
权利人:UNIV NEBRASKA
摘要:The magnesium complexes of cyclic hydrocarbons containing conjugated dienes, such as 1,2-dimethylenecycloalkanes, and 1,3-butadienes, are readily prepared in high yields using highly reactive magnesium. Reactions of these (2-butene-1,4 diyl)magnesium reagents with electrophiles such as dibromoalkanes, alkylditosylates, alkylditriflates, bromoalkylnitriles, esters, or amides serve as a convenient method for synthesizing carbocyclic systems. Significantly, carbocycles prepared by this method contain functional groups such as the exocyclic double bond or a keto group in one of the rings which could be used for further elaboration of these molecules. Furthermore, fused bicyclic systems containing a substituted five-membered ring can be conveniently prepared at high temperatures by the reactions of (2-butene-1,4-diyl)magnesium complexes with carboxylic esters or acid halides whereas low temperatures lead to regioselective synthesis of β,γ-unsaturated ketones. Additionally, γ-lactones, including spiro γ-lactones, can be easily prepared in a one pot synthesis from the reaction of (2-butene-1,4-diyl)magnesium complexes with a ketone or aldehyde and carbon dioxide. Also, δ-lactones can be easily prepared in a one pot synthesis from the reaction of (2-butene-1,4-diyl)magnesium complexes with epoxides followed by reaction with CO 2 . Use of α-hydroxy epoxides without the addition of CO 2 leads to the synthesis of vicinal diols. Chiral epoxides lead to chiral alcohols.

专利号:US-12006337-B2
优先权日:2018-05-30
标题:Mitogen-activated protein kinase inhibitors, methods of making, and methods of use thereof
发明人：HOLTZMAN MICHAEL J; ROMERO ARTHUR G; GEROVAC BENJAMIN J; HAN ZHENFU; KEELER SHAMUS P; WU KANGYUN; ZHANG YONG
权利人:WASHINGTON UNIVERSITY ST LOUIS
摘要:Compounds that inhibit mitogen-activated protein kinases (MAPKs) are disclosed. Some inhibitor compounds specifically target a single MAPK such as MAPK13, while others target multiple MAPKs such as MAPK13 and MAPK12. The compounds can be used therapeutically for a variety of diseases, including cancer and respiratory diseases. Methods of synthesis of the compounds are also disclosed.

专利号:US-5659089-A
优先权日:1996-05-22
标题 :Process for making poly(2-methyl-1,3-propanediol)
发明人：CAI GANGFENG; GASTINGER ROBERT G; SULLIVAN CARL J
权利人:ARCO CHEM TECH
摘要:A process for making poly(2-methyl-1,3-propanediol) is disclosed. The process comprises heating 2-methyl-1,3-propanediol in the presence of an etherification catalyst at a temperature within the range of about 100° C. to about 210° C. The resulting poly(2-methyl-1,3-propanediol) has a degree of polymerization within the range of about 2 to about 20, and a number average molecular weight within the range of about 150 to about 2000. The process enables the synthesis of dimers and trimers of 2-methyl-1,3-propanediol, which are useful as reactive diluents or chain extenders for polyurethanes and as diol components for unsaturated polyester resins and thermoplastic polyesters.

专利号:US-7354985-B2
优先权日:1992-07-10
标 题:Fluorinated thermoset polyurethane elastomers prepared from polyether prepolymers formed from mono-substituted fluorinated oxetane monomers
发明人：MALIK ASLAM A; ARCHIBALD THOMAS G
权利人:MALIK ASLAM A; ARCHIBALD THOMAS G
摘要:This application is directed to novel fluorinated polymers and prepolymers derived from mono-substituted oxetane monomers having fluorinated alkoxymethylene side-chains and the method of making these compositions. The mono-substituted fluorinated oxetane monomers having fluorinated alkoxymethylene side-chains are prepared in high yield by the reaction of a fluorinated alkoxides with either 3-halomethyl-3-methyloxetane premonomers or aryl sulfonate derivative of 3-hydroxymethyl-3-methyloxetane premonomers. Preparation of a mono-substituted 3-bromomethyl-3-methyloxetane premonomer via a simple, high yield process amenable to commercial scaleup is also disclosed. The fluorinated oxetane monomers of this invention can be readily homo/co-polymerized in the presence of a Lewis acid and polyhydroxy compounds to obtain hydroxy-terminated polyether prepolymers having fluorinated alkoxymethylene side chains. Additionally, the fluorinated oxetane monomers can be copolymerized with non-fluorinated monomers such as tetrahydrofuran to give polyether prepolymers with improved hydrocarbon compatibility. These prepolymers are polydisperse and exhibit number average molecular weights from 5,000 to about 50,000. These prepolymers are amorphous oils with primary hydroxy end-groups and thus function efficiently as the soft block for the synthesis of a variety of thermoset/thermoplastic elastomers and plastics having the characteristics of very low surface energy, high hydrophobicity, low glasss transition temperature and low coefficient of friction. The polyurethanes derived from the prepolymers of this invention are elastomeric and, in addition to the above characteristics, exhibit high moisture resistance, high tear strength and excellent adhesion to a variety of substrates.