CAS: 1003-04-9; Dihydrothiophen-3(2H)-One

相似化合物

3334-05-2 13679-85-1 16563-14-7

上下游产品

1-Oxo-Tetrahydro-1λ4-Thiophen-3-One 188756-09-4

4-氧四氢噻酚-3-羧酸甲酯置于硫酸体系中,化学反应生成四氢噻吩-3-酮
参考文献:四氢噻吩(噻吩)衍生物.
标题:四氢噻吩(噻吩)衍生物.
摘要:
Doi:10.1021/ja01215A034

专利信息

专利号:US-5811272-A
优先权日:1996-07-26
标题:Method for controlling molecular weight of polyhydroxyalkanoates
发明人：SNELL KRISTI D; HOGAN SCOTT A; SIM SANG JUN; SINSKEY ANTHONY J; RHA CHOKYUN
权利人:MASSACHUSETTS INST TECHNOLOGY
摘要:A method has been developed for control of molecular weight and molecular weight dispersity during production of polyhydroxyalkanoates in genetically engineered organism by control of the level and time of expression of one or more PHA synthases in the organisms. The method was demonstrated by constructing a synthetic operon for PHA production in E. coli in which the level of PHA synthase activity could be tightly controlled by placement of the synthase behind an inducible promoter. Modulation of the total level of PHA synthase activity in the host cell by varying the concentration of the inducer, isopropyl β-D-thiogalactoside (IPTG), was found to effect the molecular weight of the polymer produced in the cell. Specifically, high concentrations of synthase activity were found to yield polymers of low molecular weight while low concentrations of synthase activity yielded polymers of higher molecular weight. Polymer molecular weight dispersity is also proportional to the amount of synthase activity, with less dispersity in polyhydroxyalkanoate compositions produced in expression systems with an initial burst of synthase activity, and higher levels of molecular weight dispersity in polyhydroxyalkanoate compositions produced in expression systems with the levels of synthase activity varied during synthesis of the polyhydroxyalkanoate.

专利号:US-4143050-A
优先权日:1977-01-05
标题 :Manufacture of 3-halosulfonylthiophene-carboxylic acid compounds
发明人：ROSSY PHILLIP A; HOFFMANN WERNER; MUELLER NORBERT
权利人:BASF AG
摘要:3-Halosulfonylthiophene-carboxylic acid compounds are manufactured by reacting 3-ketothiophane-carboxylic acid compounds with sulfonic acid compounds, reacting the end product from the 1st reaction stage with alkali metal polysulfides, reacting the end product from the 2nd stage with a dehydrogenating agent and finally reacting the end product from the 3rd stage with halogen and water. The products are starting compounds for the manufacture of drugs, dyes and crop protection agents and have an anti-inflammatory, analgesic and anti-rheumatic action. In particular, the end products I are starting materials for the manufacture of sweeteners which are non-toxic and free from an after-taste, flavor-improving agents, diabetic aids and feedstuffs, and provide the means of a simple and economical synthesis of thiophene-saccharins.

专利号:US-5567830-A
优先权日:1994-02-14
标题 :Process for synthesis of acetylenic carbinols
发明人：UPASANI RAVINDRA B
权利人:COCENSYS INC
摘要:A method for the preparation of an acetylenic alcohol by reaction of 1,2-dibromoethylene with an alkyl, aryl an heteroaryl lithium in an inert solvent, followed by reaction with a carbonyl-containing compound to give an acetylenic alcohol is disclosed.

专利号:US-8980593-B1
优先权日:2011-11-16
标 题:Production of tunable polyhydroxyalkanoate biopolymers using glycerol and levulinic acid
发明人：ASHBY RICHARD D; SOLAIMAN DANIEL K Y; STRAHAN GARY D
权利人:US AGRICULTURE
摘要:This invention relates to the production of short-chain polyhydroxyalkanoate biopolymers which include C3 to C5 3-hydroxyacyl monomers. The process includes culturing a native microorganism capable of synthesizing polyhydroxyalkanoate biopolymers using as a carbon source an amount of glycerol, levulinic acid and mixtures thereof that drives the microbial synthesis of polyhydroxyalkanoate biopolymers.

专利号:US-6600029-B1
优先权日:1995-12-19
标题:Metabolic engineering of polyhydroxyalkanoate monomer synthases
发明人：SHERMAN DAVID H; WILLIAMS MARK D; XUE YONGQUAN
权利人:UNIV MINNESOTA
摘要:A novel pathway for the synthesis of polyhydroxyalkanoate is provided. A method of synthesizing a recombinant polyhydroxyalkanoate monomer synthase is also provided. These recombinant polyhydroxyalknoate synthases are derived from multifunctional fatty acid synthases or polyketide synthases and generate hydroxyacyl acids capable of polymerization by a polyhydroxyalknoate synthase.

专利号:RU-1819266-C
优先权日:1987-06-16
标题 :Method of synthesis of n-(1-methoxyprop-2-yl)-2,4-dimethyl-3-aminothiophene, 2,4-dimethyl-2,3-dihydrothiophene-3-one as an intermediate product for synthesis of n-(1-methoxyprop-2-yl)-2,4-dimethyl-3-aminothiophene, and derivatives of 2,4-dimethyl-2,3-dihydrothiophene-3-one as parent products for synthesis