CAS: 632-16-6; 2,3-Dimethylthiophene

上下游产品

CAS号5834-16-2 3-甲基-2-噻吩甲醛 | CAS号6153-05-5 (Z)-3-甲基戊-2-烯-4... | CAS号616-44-4 3-甲基噻吩 | CAS号74-88-4 碘甲烷 | CAS号5895-88-5 Hydrazinecarbox... | CAS号6628-79-1 β-甲基乙酰丙酸 | CAS号74-86-2 乙炔 | CAS号14282-76-9 2-溴-3-甲基噻吩 | CAS号554-14-3 2-甲基噻吩 | CAS号40808-24-0 4,5-二甲基噻吩-2-羰酸 | CAS号250609-29-1 2,3-DIMETHYL-5-... | CAS号188290-36-0 Thiophene(SIV) | CAS号872-55-9 2-乙基噻吩 | CAS号638-02-8 2,5-二甲基噻吩 | CAS号616-44-4 3-甲基噻吩 | CAS号632-15-5 3,4-二甲基噻吩 | CAS号638-00-6 2,4-二甲基噻吩 | CAS号554-14-3 2-甲基噻吩 | CAS号108-88-3 甲苯

3-甲基-4-氧代戊酸置于diphosphorus Trisulfide体系中,化学反应生成 2,3-二甲基噻吩
参考文献:Meyer,V.,Die Thiophengruppe,S. 39 Anm.
标题:Meyer,V.,Die Thiophengruppe,S. 39 Anm.

专利信息

专利号:US-9802952-B2
优先权日:2013-07-15
标 题:Method and apparatus for the synthesis of dihydroartemisinin and artemisinin derivatives
发明人：KOPETZKI DANIEL; MCQUADE DAVID TYLER; SEEBERGER PETER H; GILMORE KERRY
权利人:MAX-PLANCK-GESELLSCHAFT ZUR FÖRDERUNG DER WSS E V; MAX-PLANK-GESELLSCHAFT ZUR FÖRDERUNG DER WSS E V
摘要:The present invention is directed to a method for continuous production of dihydroartemisinin and also artemisinin derivatives derived from dihydroartemisinin by using artemisinin or dihydroartemisinic acid (DHAA) as starting material as well as to a continuous flow reactor for producing dihydroartemisinin as well as the artemisinin derivatives. It was found that the reduction of artemisinin to dihydroartemisinin in a continuous process requires a special kind of reactor and a special combination of reagents comprising a hydride reducing agent, at least one activator such as an inorganic activator, at least one solid base, at least one aprotic solvent and at least one C 1 -C 5 alcohol.

专利号:US-7635781-B2
优先权日:2001-05-15
标 题:Synthesis of cyclopentadiene derivatives
发明人：NIFANT EV ILYA; KASHULIN IGOR; IVCHENKO PAVEL; KLUSENER PETER; KORNDORFFER FRANS; DE KLOE KEES; RIJSEMUS JOS
权利人:BASELL POLYOLEFINE GMBH
摘要:A compound of formula (X): n n n n n n n n n n n n wherein n R 1 , R 2 , equal to or different from each other are hydrogen or a linear or branched saturated or unsaturated C 1 -C 20 -alkyl, C 3 -C 20 -cycloalkyl, C 6 -C 20 -aryl, C 7 -C 20 -alkylaryl or C 7 -C 20 -arylalkyl radical, optionally containing heteroatoms belonging to groups 13-17 of the Periodic Table of the Elements; or they can form a C 4 -C 7 ring optionally containing O, S, N, P or Si atoms that can bear substituents; n R 3 is hydrogen or a linear or branched saturated or unsaturated C 1 -C 20 -alkyl, C 3 -C 20 -cycloalkyl, C 6 -C 20 -aryl, C 7 -C 20 -alkylaryl or C 7 -C 20 -arylalkyl radical, optionally containing heteroatoms belonging to groups 13-17 of the Periodic Table of the Elements; or two adjacent R 3 groups can form a C 4 -C 7 ring optionally containing O, S, N, P or Si atoms, wherein said ring can bear substituents; n and at least one of R 1 , R 2 or R 3 is different from hydrogen.

专利号:US-8258298-B2
优先权日:2008-12-10
标 题 :Synthesis of morphine-6-glucuronide or one of the derivatives thereof
发明人：DLUBALA ALAIN; TRECANT CLAIRE; RIPOCHE ISABELLE
权利人:DLUBALA ALAIN; TRECANT CLAIRE; RIPOCHE ISABELLE; SANOFI SA
摘要:The disclosure relates to a method for preparing morphine-6-glucuronide or one of the deritives thereof comprising reacting a compound of formula (I): n nwherein R 1 is as defined in the disclosure,n nwith a glucuronic acid derivative of formula (II):n n nwherein PG, X, and R 4 are as defined in the disclosure,n nin the presence of an aromatic solvent and trimethylsilyl trifluoromethanesulfonate;n n(ii) reacting the product obtained in step (i) with a strong basic agent; and then (iii) recovering the product obtained in step (ii).

专利号:US-7329767-B2
优先权日:2003-10-03
标 题:Conjugated dienamides, methods of production thereof, compositions containing same and uses thereof
发明人：DEWIS MARK L; JOHN THUMPLASSERIL V; ECKERT MARKUS A; COLSTEE JAN HERMAN; DA COSTA NEIL C; PEI TAO
权利人:INT FLAVORS & FRAGRANCES INC
摘要:Described are mixtures of at least four of the alkadienamides defined according to the structure: n nwherein R represents C 1 -C 2 n-alkyl; R 1 is 2-methyl-1-propyl and R 2 is hydrogen, or R 1 and R 2 taken together is a moiety having the formulan n nwherein n is 4 or 5, or compositions containing substantial concentrations of such mixtures, prepared according to novel processes: (a) extraction of a ground substantially dried fruit of one of the Piper species, Piper longum Linn or Piper peepuloides ; (b) natural product-forming synthesis; or (c) synthetic product-forming synthesis. Also described are uses of the thus-formed products for augmenting, enhancing or imparting an aroma, taste, chemesthetic effect and/or antibacterial effect in or to a consumable material and/or in the oral cavity and/or on the mammalian epidermis.

专利号:US-8007841-B2
优先权日:2003-10-03
标 题 :Conjugated dienamides, methods of production thereof, compositions containing same and uses thereof
发明人：JOHN THUMPLASSERIL V; ECKERT MARKUS A; DEWIS MARK L; COLSTEE JAN HERMAN; DA COSTA NEIL C
权利人:INT FLAVORS & FRAGRANCES INC
摘要:Described are mixtures of at least four of the alkadienamides defined according to the structure: n nwherein R represents C 1 -C 2 n-alkyl; R 1 is 2-methyl-1-propyl and R 2 is hydrogen, or R 1 and R 2 taken together is a moiety having the formula —(CH 2 ) n —, wherein n is 4 or 5, or compositions containing substantial concentrations of such mixtures, prepared according to novel processes: (a) extraction of a ground substantially dried fruit of one of the Piper species, Piper longum Linn or Piper peepuloides ; (b) natural product-forming synthesis; or (c) synthetic product-forming synthesis. Also described are uses of the thus-formed products for augmenting, enhancing or imparting an aroma, taste, chemesthetic effect and/or antibacterial effect in or to a consumable material and/or in the oral cavity and/or on the mammalian epidermis.

专利号:US-7129361-B2
优先权日:1998-04-15
标 题 :Thienylazolylalkoxyethanamines, their preparation and their application as medicaments
发明人：MERCE-VIDAL RAMON; ANDALUZ-MATARO BLAS; FRIGOLA-CONSTANSA JORDI
权利人:ESTEVE LABOR DR
摘要:The thienylazolylalkoxyethanamines (I) where R1 is a hydrogen atom, a halogen atom or a lower alkyl radical; R2, R3 and R4 represent, independently, a hydrogen atom or a lower alkyl radical; and Az represents a five-member nitrogenated hetercyclic aromatic group, N-methyl-substituted, that contains from one to three nitrogen atoms. They have analgesic activity in mammals, including humans. The compounds (I) can be obtained, for example, by reaction of a derivative of hydroxy-thienylazol (IV) with a derivative of a suitable N-(ethyl)amine. The compounds (IV) are useful intermediates in the synthesis of the compounds (I). The compounds (I) have an application in human and/or veterinary medicine.