专利号:US-6184168-B1 优先权日:1997-09-22 标题:Synthesis of 1,4-trans-polybutadiene using a lanthanide organic acid salt catalyst 发明人:LYNCH THOMAS J 权利人:BRIDGESTONE CORP 摘要:The invention provides a catalyst composition, comprising: (a) an organolithium compound; and, (b) an organic acid salt of lanthanide series element; wherein: (1) only components (a) and (b) are required to promote the synthesis of 1,4-trans-polybutadiene; (2) the ratio of component (a) to component (b) is selected to maximize formation of the trans structure of said 1,4-trans-polybutadiene; and, (3) components (a) and (b) are selected for enabling further diblock synthesis. The invention further contemplates a process for using the catalyst to synthesize 1,4-trans-polybutadiene and other polymers and copolymers having trans configuration in the conjugated diene monomer contributed units.
专利号:US-11059835-B2 优先权日:2014-08-15 标 题 :Synthesis of cephalosporin compounds 发明人:WALLER DAVID; GAZDA GREGORY; MINDEN ZACHARY; BARTON LISA; LEIGH CLIFTON 权利人:MERCK SHARP & DOHME 摘要:Provided herein is a method for the synthesis of cephalosporin antibiotic compounds comprising a palladium-catalyzed coupling reaction.
专利号:US-2024309142-A1 优先权日:2023-03-17 标题 :Capped block copolymers, their synthesis, manufacture, and methods of use 发明人:MAN VICTOR FUK-PONG; LI XIAOJIN HARRY; CHEN YIQING; PU GANG; HUNT JR CLINTON 权利人:ECOLAB USA INC 摘要:This disclosure relates to capped block copolymers, preferably reverse block copolymers capped with a hydrophobic group. Preferred hydrophobic groups include benzyl groups and silyl groups. In a preferred embodiment, the reverse block copolymer has at least two arms, wherein each arm is capped with a hydrophobic group. The disclosure also provides for the synthesis of the capped block copolymers as well as methods of using the capped block copolymers for defoaming and antifoaming applications.
专利号:US-2024182421-A1 优先权日:2021-03-19 标题 :Synthesis of endochin-like quinolones 发明人:RISCOE MICHAEL K; NILSEN AARON; JIN HAIHONG; POU SOVITJ; WINTER ROLF W; DODEAN ROZALIA ANA; LIEBMAN KATHERINE M 权利人:UNIV OREGON HEALTH & SCIENCE; US GOV VETERANS AFFAIRS 摘要:Described herein are new synthetic routes for production of Endochin-Like Quinolone (ELQ) compounds. Synthetic routes to 3-substituted 4(1H)-quinolones are presented that are amenable to industrial scale preparation. One herein presented approach is relatively short, does not require palladium, and involves no chromatographic separation. A second herein presented approach is similarly relatively short, does not require palladium, involves no chromatographic separation, and also avoids high vacuum distillation. Additionally, both approaches require no protecting group chemistry because the insoluble 4(1H)-quinolone is not formed until the final reaction step.
专利号:US-7790881-B2 优先权日:2004-09-23 标 题:Methods of chemical synthesis and purification of diaminophenothiazinium compounds including methylthioninium chloride (MTC) 发明人:STOREY JOHN MERVYN DAVID; SINCLAIR JAMES PETER; MARSHALL COLIN; TAN HAN WAN 权利人:WISTA LAB LTD 摘要:This invention pertains generally to the field of chemical synthesis and purification, and more specifically to methods of synthesizing and purifying certain 3,7 diamino-phenothiazin-5-ium compounds (referred to herein as “diaminophenothiazinium compoundsâ€?) including Methylthioninium Chloride (MTC) (also known as Methylene Blue). In one embodiment, the method comprises the steps of, in order: nitrosylation (NOS); nitrosyl reduction (NR); thiosulfonic acid formation (TSAF); oxidative coupling (OC); Cr(VI) reduction (CR); isolation and purification of zwitterionic intermediate (IAPOZI); ring closure (RC); chloride salt formation (CSF); one of: sulphide treatment (ST); dimethyldithiocarbamate treatment (DT); carbonate treatment (CT); ethylenediaminetetraacetic acid treatment (EDTAT); organic extraction (OE); and recrystallisation (RX). The present invention also pertains to the resulting (high purity) compounds, compositions comprising them (e.g., tablets, capsules), and their use in methods of inactivating pathogens, and methods of medical treatment and diagnosis, etc., for example, for tauopathies, Alzheimer's disease (AD), skin cancer, melanoma, viral diseases, bacterial diseases, or protozoal diseases. Wherein: each of R 1 and R 9 is independently selected from: —H; C 1-4 alkenyl; and halogenated C 1-4 alkyl; each of R 3NA and R 3NB is independently selected from: C 1-4 alkyl; C 2-4 alkenyl; and halogenated C 4-1 alkyl; each of R 7NA and R 7NB is independently selected from: C 1-4 alkyl; C 2-4 alkenyl; and halogenated C 1-4 alkyl; and X is one or more anionic counter ions to achieve electrical neutrality.
专利号:US-6018007-A 优先权日:1997-09-22 标 题:Synthesis of 1,4-trans-polybutadiene using a lanthanide organic acid salt catalyst
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