CAS: 693-95-8; 4-Methylthiazole

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CAS号6407-34-7 N-methyl-2-Prop... | CAS号20485-41-0 4-甲基噻唑-5-甲酸 | CAS号693-90-3 4-甲基-异噻唑 | CAS号77287-34-4 甲亚胺酸 | CAS号598-31-2 溴丙酮 | CAS号115-08-2 硫代甲酰胺 | CAS号78-95-5 氯丙酮 | CAS号5685-06-3 4-甲硫基唑-2-硫醇 | CAS号14397-08-1 2-肼基-4-甲基噻唑盐酸盐 | CAS号52558-99-3 4-methyl-3-thia... | CAS号52829-53-5 4-(溴甲基)-1,3-噻唑 | CAS号103347-14-4 4-(溴甲基)-1-氯-2-甲氧基苯 | CAS号3364-76-9 4-氯甲基噻唑 | CAS号3364-79-2 4-(dichlorometh... | CAS号142941-96-6 1-(4-methylphen... | CAS号7238-61-1 2-溴-4-甲基噻唑 | CAS号26213-72-9 4-甲基-5-硝基噻唑 | CAS号541-58-2 2,4-二甲基噻唑 | CAS号693-92-5 3-甲基异噻唑 | CAS号5685-06-3 4-甲硫基唑-2-硫醇

4-甲基-异噻唑 以 乙醇 作为反应溶剂,化学反应生成 4-甲基噻唑
参考文献:Phototransposition Chemistry Of Methylisothiazoles And Methylthiazoles
标题:Phototransposition Chemistry Of Methylisothiazoles And Methylthiazoles
摘要:Methylisothiazoles Undergo Phototransposition In Neutral Solution To Methylthiazoles By A Single Permutation Process. Methylisothiazole--> Methylisothiazole Transpositions,Previously Reported To occur,Were Not Detected In These Reactions. In Trifluoroacetic Acid Solvent,Protonated Methylisothiazoles And Methylthiazoles Phototranspose By P4 And P5 Permutation Pathways,Respectively,Resulting In A Unique Phototransposition Cycle.
DOI:10.1021/jo00064A033

专利信息

专利号:WO-2005100367-A1
优先权日:2004-04-13
标 题 :Intermediates useful in the synthesis of 3-(2-substituted vinyl) cephalosporins
发明人：KUMAR YATENDRA; PRASAD MOHAN; SINGH KAPTAN; PRASAD ASHOK; RICHHARIYA SANTOSH
权利人:RANBAXY LAB LTD; KUMAR YATENDRA; PRASAD MOHAN; SINGH KAPTAN; PRASAD ASHOK; RICHHARIYA SANTOSH
摘要:The present invention relates to crystalline intermediates useful in the synthesis of 3-(2-substituted vinyl) cephalosporins and processes for their preparation. In particular, the present invention relates to crystalline ylides of Formula I, processes for their preparation, and their use as an intermediate in thepreparation of 3-(2-substituted vinyl) cephalosporins.

专利号:US-6518438-B2
优先权日:1996-08-23
标题:Preparation of cyclohexene carboxylate derivatives
发明人：KENT KENNETH M; KIM CHOUNG U; MCGEE LAWRENCE R; MUNGER JOHN D; PRISBE ERNEST J; POSTICH MICHAEL J; ROHLOFF JOHN C; KELLY DAPHNE E; WILLIAMS MATTHEW A; ZHANG LIJUN
权利人:GILEAD SCIENCES INC
摘要:The present invention provides new synthetic methods and compositions. In particular, new methods of preparing intermediates useful in the synthesis of neuraminidase inhibitors and compositions useful as intermediates that are themselves useful in the synthesis of neuraminidase inhibitors are provided.

专利号:US-7470792-B2
优先权日:2002-09-13
标题:Process for the preparation of epothilone derivatives, new epothilone derivatives as well as new intermediate products for the process and the methods of preparing same
发明人：KOCH GUIDO; LOISELEUR OLIVIER
权利人:NOVARTIS AG
摘要:The present invention provides a synthesis for the preparation of epothilone derivatives of formula 9 n nwherein R1 is methyl, and R2 is an unsubstituted or substituted aryl; an unsubstituted or substituted heteroaryl; or an unsubstituted or substituted heterocyclic radical fused to a benzene nucleus; and salts thereof, and intermediates for the synthesis of a compound of formula 9.

专利号:US-5215997-A
优先权日:1985-09-11
标题:Synthesis of beta-lactam compounds
发明人：HUNGERBUEHLER ERNST; KALVODA JAROSLAV
权利人:CIBA GEIGY CORP
摘要:The invention relates to an improved process for the preparation of compounds of formula ##STR1## or salts thereof, starting from compounds of formulae ##STR2## via compounds of formulae ##STR3## in which compounds R 1 is hydrogen or lower alkyl, R 2 is an organic radical which may carry a functional group which may be protected by a customary protective group R 2 o , R 3 is hydrogen or a customary carboxyl protective group R 3 o , W is a group which can be replaced by a thiocarboxylic acid radical of formula III, and Z is oxygen or sulfur.

专利号:US-3943142-A
优先权日:1969-01-24
标 题:Dye intermediates and their preparation and use in the synthesis of methine dyes
发明人：OWEN JOHN R
权利人:EASTMAN KODAK CO
摘要:Compositions of matter are provided comprising a stable, non-vaporous monomeric methylene base selected from a 2-methylenethiazoline; a 2-methylenebenzothiazoline; a 2-methylenenaphthothiazoline; a 2-methylenebenzoselenazoline; and a 2-methylenenaphthoselenazoline. The compositions of the invention are prepared by reacting the parent 2-methyl quaternary salt with a non-hydroxylic base which removes a proton of the heterocyclic salt together with a proton acceptor which inhibits build-up of the hydro salt of the non-hydroxylic base, the reaction being conducted under anhydrous conditions in a non-hydroxylic liquid in which the heterocyclic quaternary salt is sufficiently insoluble to inhibit dimer formation. The compositions of the invention are employed in the preparation of methine dyes.

专利号:US-3558614-A
优先权日:1967-09-05
标题:Synthesis of tetranuclear dyes
发明人：JENKINS PHILIP W
权利人:EASTMAN KODAK CO
摘要:TETRANUCLEAR DYES DERIVED FROM A 2-IMIDAZOLIN-4-ONE, A 2-IMIDAZOLIN-4-THIONE AND A 2-IMIDAZOLIN-4-SELENONE ARE PREPARED IN GOOD YIELDS BY CONDENSING A QUATERNIZED MEROCYANINE DYE DERIVED FROM A 2-IMIDAZOLIN-4-ONE, A 2-IMIDAZOLIN-4-THIONE OR A 2-IMIDAZOLIN4-SELENONE WITH (1) A DIALKOXYALKYL ESTER OF AN ORGANIC ACID, (2) A TRIALKOXY ALKANE OR ARYL COMPOUND, (3) A 3,3-DIALKOZY-1ALKOXYPROPENE, (4) A 1-ANILINO-5-PHENYLIMINO-1,3-PENTADIENE OR (5) A SECOND QUATERNIZED MROCYANINE DYE DERIVED FROM A 2-IMIDAZOLIN-4-ONE, A 2-IMIDAZOLIN-4THIONE OR A 2-IMIDAZOLIN-4-SELENONE, EACH HAVING SUBSTITUTED ON THE CARBON IN THE 2-POSITION A GROUP SUCH AS A B-ACETANILIDOVINYL GROUP, A 4-ACETANILIDO-1,3-BUTADIENYL GROUP, AND A 6-ACETANILIDO-1,3,5-HEXADIENYL GROUP.