专利号:US-6084108-A 优先权日:1997-10-14 标 题 :Synthesis of 3-carbomethoxy-4,5-dimethylthiophene 发明人:FEVIG THOMAS L; LAU PATRICK H; PHILLIPS WENDELL G 权利人:MONSANTO CO 摘要:Fungicides having thiophene rings may be made from the intermediate compound 3-carbomethoxy-4,5-dimethylthiophene. That compound, and related compounds, may be produced by reacting an alpha mercaptoketone, e.g., 3-mercapto-2-butanone, with an acrylate, e.g., methyl-3-methoxy acrylate, in the presence of an alkoxide base, e.g., NaOMe, to form the substituted tetrahydrothiophene, followed by conversion to the aromatic thiophene with an acid treatment. The substituted tetrahydrothiophene is a novel compound.
专利号:US-4801721-A 优先权日:1984-08-16 标题 :Stereospecific synthesis of carboxyalkyl peptides 发明人:RYAN JAMES W; CHUNG ALFRED 权利人:RYAN JAMES W; CHUNG ALFRED 摘要:Methods for the alkylation of substituted amines with trifluorate esters is disclosed.
专利号:EP-0051792-A1 优先权日:1980-11-08 标 题 :Derivatives of hydroxamic-acid esters, process for their preparation and their use as herbicides 发明人:FUEHRER WOLFGANG DR; STETTER JOERG DR; EUE LUDWIG DR; SCHMIDT ROBERT RUDOLF DR 权利人:BAYER AG 摘要:Hydroxamic acid derivatives of the formula in which Y represents oxygen or sulfur, R¹ represents hydrogen, alkyl or alkoxy, R² represents hydrogen, alkyl, alkoxy or halogen, R³ represents hydrogen, alkyl, alkoxy or halogen, R < 4> represents hydrogen or alkyl, R <5> represents alkyl, alkenyl, alkynyl or alkoxyalkyl, R <6> represents hydrogen, alkyl, alkenyl, alkynyl or alkoxyalkyl or R <4> and R <5> together represent one Alkylene chain, or R 5 and R 6 together represent an alkylene chain, provided Y is oxygen and Z is halogen, a process for their preparation and their use as herbicides. N-phenylglycine derivatives of the formula in which Y, R¹, R², R³, R <4>, R <5> and R <6> have the meanings given above, several processes for their preparation and their use as intermediates for the synthesis of the substances of formula (I).
专利号:WO-9919321-A1 优先权日:1997-10-14 标 题 :Synthesis of 3-carbomethoxy-4,5-dimethylthiophene
专利号:EP-1023283-B1 优先权日:1997-10-14 标 题 :Synthesis of 3-carbomethoxy-4,5-dimethylthiophene
专利号:DK-1023283-T3 优先权日:1997-10-14 标题 :Synthesis of 3-carboxymethoxy-4,5-dimethylthiophene
摘要:Kashemirov, B. A.; Błażewska, K.; Justyna, K.; Lyu, J.; McKenna, C. E., Science of Synthesis Knowledge Updates, (2021) 1, 412. 摘要:Harris, P. A., Science of Synthesis: Knowledge Updates, (2024) 1, 38.