CAS: 1121-84-2; 4-Methyltetrahydro-2H-Pyran-2-One

相似化合物

542-28-9 4166-53-4 18653-57-1

上下游产品

3-甲基戊二酸酐 3-Methylglutaric Anhydride 4166-53-4
3-Methylglutaric Anhydride
Delta-戊内酯 3,4,5,6-Tetrahydro-2H-Pyran-2-One 542-28-9
β-甲基戊二酸单甲酯 3-Methyl-1,5-Pentanedioic Acid Monomethyl Ester 27151-65-1
(R)-(+)-3-甲基戊二酸甲酯 (R)-5-Methoxy-3-Methyl-5-Oxopentanoic Acid 63473-60-9
Cis-3-Oxa-Bicyclo[4.1.0]Heptan-2-One 21251-52-5
3-甲基戊酸 3-Methylvaleric Acid 105-43-1

4-甲基-5,6-二氢吡喃-2-酮置于palladium 10% On Activated Carbon,氢气体系中,用 甲醇 用作溶剂,以100%的收率获得3-甲基-5-戊内酯
参考文献:环状烯烃不对称氢化的手性杂碳环化合物
标题:环状烯烃不对称氢化的手性杂碳环化合物
摘要:通过使用环状烯烃的不对称氢化,已经合成了几种类型的手性杂环和碳环化合物.N,P连接的铱催化剂将具有各种取代基和杂官能团的六元环烯烃还原为非常好至优异的对映选择性,而五元环烯烃的还原通常选择性较低,给出适度的对映异构体过量.氢化的立体选择性在很大程度上取决于五元环烯烃而不是六元环烯烃的底物结构.六元烯烃还原反应中形成的主要对映异构体可通过选择性模型预测,异构体烯烃具有互补的对映选择性,氢化后可得到相反的旋光异构体.顺式环己烷羧酸盐.
Doi:10.1002/chem.201104073

专利信息

专利号:WO-2006097656-A1
优先权日:2005-03-15
标 题 :Synthesis of polylactone-grafted evoh
发明人：ZERROUKHI AMAR; BECQUART FREDERIC
权利人:UNIV JEAN MONNET; CENTRE NAT RECH SCIENT; ZERROUKHI AMAR; BECQUART FREDERIC
摘要:The invention relates to a method for the synthesis of polylactone-grafted EVOH, comprising the following steps consisting in: producing a solvent-free homogeneous mixture containing at least EVOH, at least one monomer comprising a lactone ring and at least one catalyst or initiator; and stopping the polymerisation reaction after a few minutes.

专利号:US-6051704-A
优先权日:1996-07-22
标题:Synthesis of macrocyclic tetraamido-N ligands
发明人：GORDON-WYLIE SCOTT W; COLLINS TERRENCE J
权利人:UNIV CARNEGIE MELLON
摘要:New synthetic methods for the preparation of macrocyclic amido-N donor ligands are provided. The primary method of the present invention involves in general only two synthetic steps. In the first step, an α or β amino carboxylic acid is allowed to react with an optimal (approximately stoichiometric) amount of an activated malonate or oxalate derivative with mild heating. Upon completion of the double coupling reaction, hydrolysis of the reaction mixture yields a diamide containing intermediate (a macro linker). In the second step, stoichiometric amounts of a diamine, preferably an orthophenylene diamine, are added to the macro linker intermediate in the presence of a coupling agent and heat. This second double coupling reaction, is allowed to proceed for a period of time sufficient to produce a macrocyclic tetraamido compound. The substituent groups on the α or β amino carboxylic acid, the malonate, and the aryl diamine may all be selectively varied so that the resulting tetraamido macrocycle can be tailored to specific desired end uses. The macrocyclic tetraamide ligand may then be complexed with a metal, such as a transition metal, and preferably the middle and later transition metals, to form a robust chelate complex suitable for catalyzing oxidation reactions.

专利号:US-5414097-A
优先权日:1991-12-13
标 题:Purification of esters of tetrahydro-pyran-4-carboxylic acid
发明人：FISCHER ROLF; GOETZ NORBERT; KUEKENHOEHNER THOMAS; RUST HARALD; SCHNURR WERNER
权利人:BASF AG
摘要:A process for purifying esters of tetrahydropyran-4-carboxylic acid of the formula I ##STR1## where R 1 to R 3 are each C 1 -C 4 -alkyl, and R 2 and R 3 are each additionally hydrogen, from mixtures produced in the reaction of butyrolactones of the formula II ##STR2## where R 2 and R 3 have the abovementioned meanings, and R 4 is hydrogen, alkyl of 1-6 carbons or acyl of the formula --CO--R 2 , with alcohols of the formula R 1 OH in the presence of oxide catalysts, by distillation, which entails n a) removing overhead, in a first column with 5-25 theoretical plates with a distillate pressure of 700-1100 mbar and a distillate temperature of 50°-80° C., an alcohol and up to 10% of the water, n b) transferring the bottom product from the first column into a second column with 18-40 theoretical plates, into which a water entrainer is metered between plates 15 and 30, and is circulated, and which operates with a distillate pressure of 35-350 mbar and a distillate temperature of 18°-70° C., with the esters of tetrahydropyran-4-carboxylic acid being removed between plates 8 and 18 at 90°-150° C., and, where appropriate, n c) feeding the bottom product from the second column into a third column with 5-25 theoretical plates, and returning the overhead products at a distillate pressure of 1-100 mbar and a distillate temperature of 90°-140° C. to the synthesis of the esters of tetrahydropyran-4-carboxylic acid.

专利号:US-7060818-B2
优先权日:2003-02-21
标题:Synthesis of macrocyclic tetraamido compounds and new metal insertion process
发明人：HORWITZ COLIN P; GHOSH ANINDYA
权利人:UNIV CARNEGIE MELLON
摘要:An improved method of synthesizing a macrocyclic tetraamido compound includes protecting the amino portion of an amino carboxylic acid to form a protected amino carboxylic acid; exposing the protected amino carboxylic acid to a first solvent, preferably a hydrocarbon solvent, such as toluene or 1,2-dichloroethane, dichloromethane, dibromomethane and 1,2-dibromoethane. The carboxylic acid portion of the protected amino carboxylic acid is then converted to an activated carboxylic acid by one of esterification or acid halide formation, to form a protected amino activated carboxylic acid derivative. The protected amino activated carboxylic acid derivative is reacted with a diamine in the presence of a second solvent, such as THF or ,2-dichloroethane, dichloromethane, dibromomethane and 1,2-dibromoethane, to form a protected diamide diamine intermediate. Following deprotection, the diamide diamine intermediate is reacted with an activated diacid, such as an activated malonate, oxalate or succinate derivative to form the macrocyclic tetraamido compound. The macrocyclic tetraamido compound may further be complexed with a transition metal.

专利号:US-8043786-B2
优先权日:2003-03-05
标题 :Acid generators, sulfonic acids, sulfonyl halides, and radiation sensitive resin compositions
发明人：EBATA SATOSHI; WANG YONG; NISHIMURA ISAO
权利人:JSR CORP
摘要:The invention provides novel acid generators which are unproblematic in combustibility and accumulation inside the human body and can generate acids having high acidities and high boiling points and exhibiting properly short diffusion lengths in resist coating films and which permit the formation of resist patterns excellent smoothness with little dependence on the denseness of a mask pattern; sulfonic acids generated from the acid generators; sulfonyl halides useful as raw material in the synthesis of the acid generators; and radiation-sensitive resin compositions containing the acid generators. The acid generators have structures represented by the general formula (I), n nwherein R 1 is a monovalent substituent such as alkoxycarbonyl, alkylsulfonyl, or alkoxysulfonyl; R 2 to R 4 are each hydrogen or alkyl; k is an integer of 0 or above; and n is an integer of 0 to 5. Among the radiation-sensitive resin compositions, a positive one contains a resin having acid-dissociable groups in addition to the above acid generator, while a negative one contains an alkali-soluble resin and a crosslinking agent in addition to the acid generator.

专利号:US-8053165-B2
优先权日:2008-03-18
标 题:Hydroxyl-containing monomer, polymer, resist composition, and patterning process
发明人：KINSHO TAKESHI; OHASHI MASAKI; HASEGAWA KOJI; WATANABE TAKERU
权利人:SHINETSU CHEMICAL CO
摘要:A hydroxyl-containing monomer of formula (1) is provided wherein R 1 is H, F, methyl or trifluoromethyl, R 2 and R 3 are monovalent C 1 -C 15 hydrocarbon groups, or R 2 and R 3 may form an aliphatic ring. The monomers are useful for the synthesis of polymers which have high transparency to radiation of up to 500 nm and the effect of controlling acid diffusion so that the polymers may be used as a base resin to formulate radiation-sensitive resist compositions having a high resolution.