专利号:US-10570114-B2 优先权日:2016-05-19 标题:Synthesis of 6-aryl-4-aminopicolinates and 2-aryl-6-aminopyrimidine-4-carboxylates by direct suzuki coupling 发明人:FISK JASON S; LI XIAOYONG; Muehlfeld Mark; BAUMAN ROBERT S; OPPENHEIMER JOSSIAN; TU SIYU; NITZ MARK A; CHAKRABARTI REETAM; FEIST SHAWN D; RINGER JAMES W; LENG RONALD B 权利人:DOW AGROSCIENCES LLC 摘要:Improved methods of synthesizing 6-aryl-4-aminopicolinates, such as arylalkyl and alkyl 4-amino-3-chloro-6-(4-chloro-2-fluoro-3-methoxyphenyl)pyridine-2-carboxylates and arylalkyl and alkyl 4-amino-3-chloro-5-fluoro-6-(4-chloro-2-fluoro-3-methoxyphenyl)pyridine-2-carboxylates, are described herein. The improved methods include a direct Suzuki coupling step, which eliminates the protection/de-protection steps in the current chemical process, and therefore eliminates or reduces various raw materials, equipment and cycle time as well as modification of other process conditions including use of crude AP, use of ABA-diMe, and varying pH, catalyst concentration, solvent composition, and/or workup procedures. This includes synthesis of 2-aryl-6-aminopyrimidine-4-carboxylates.
专利号:US-2025002518-A1 优先权日:2023-06-16 标 题 :Synthesis of heteroarynes and use thereof 发明人:MATTMILLER ROBERTS COURTNEY COLLEEN; HUMKE JENNA NICOLE; QUINLIVAN ANSEL ANNABEL; BELLI ROMAN GIANCARLO; KARGBO SALLU SO; PLASEK ERIN ELIZABETH 权利人:UNIV MINNESOTA 摘要:Disclosed herein are heterocyclic arynes and methods for preparing the same. Heteroarynes such as 5-membered O- or N-heterocyclic arynes have been considered inaccessible due to ring strain associated with the triple bond. The methods described herein demonstrate that these arynes can be successfully prepared through the utility of pi-backbonding from a transition metal. Synthetic utility of this method has been demonstrated by the facile synthesis and functionalization of heterocycles using these heteroaryne building blocks.
专利号:US-2017081347-A1 优先权日:2014-04-14 标题:Functionalized azaborine compounds and azaborine-containing biarylcarboxamides, and compositions and methods thereof 发明人:LIU SHIH-YUAN; ZHAO PENG; BROWN ALEC NATHANIEL 权利人:THE TRUSTEES OF BOSTON COLLEGE 摘要:The invention provides novel azaborine compounds, methods for their syntheses and functionalization, and various applications thereof. For example, novel azaborine-containing biarylcarboxylic acids and biarylcarboxamides are disclosed herein, which provide the opportunity to be used as therapeutic agents in different diseases. The novel azaborine-containing compounds show unique physical and biological properties when compared to their corresponding all-carbon compounds. Also, disclosed herein are substituted 1,2-dihydro-1,2-azaborine compounds and methods for making the same including methods for the preparation of various substituted azaborines including alkyl, alkenyl, aryl, nitrile, heteroaryl, and fused ring substituents in the presence of B—H, B—Cl, B—O and N—H bonds from Br-substituted azaborines as well as the synthesis of new fused BN-heterocycles.
专利号:US-9549921-B2 优先权日:2013-06-24 标 题:Heterocyclic compounds and methods of use thereof for the treatment of hepatitis C 发明人:HE SHUWEN; LAI ZHONG; DAI XING; XIAO DONG; LONDON CLARE; ZORN NICOLAS; NARGUND RAVI; PALANI ANANDAN; MCCOMAS CASEY C; LI PENG; PENG XUANJIA; SOLL RICHARD 权利人:HE SHUWEN; LAI ZHONG; DAI XING; XIAO DONG; LONDON CLARE; ZORN NICOLAS; NARGUND RAVI; PALANI ANANDAN; MCCOMAS CASEY C; LI PENG; PENG XUANJIA; SOLL RICHARD; MERCK SHARP & DOHME 摘要:The present invention relates to compounds of formula I that are useful as hepatitis C virus (HCV) NS5B polymerase inhibitors, the synthesis of such compounds, and the use of such compounds for inhibiting HCV NS5B polymerase activity, for treating or preventing HCV infections and for inhibiting HCV viral replication and/or viral production in a cell-based system.(I)
专利号:US-2018334444-A1 优先权日:2016-05-19 标 题:Synthesis of 6-aryl-4-aminopicolinates and 2-aryl-6-aminopyrimidine-4-carboxylates by direct suzuki coupling
专利号:US-2023357155-A1 优先权日:2020-03-18 标 题:Improved synthesis of 4-amino-6-(heterocyclic)picolinates 发明人:CANTURK BELGIN; DEVARAJ JAYACHANDRAN; HAZARI AMARUKA; KASSL CHRISTOPHER; LEE MELISSA; LI FANGZHENG; LOWE CHRISTIAN T; SIDDALL THOMAS L; WHITEKER GREGORY T; ZHANG CHUNMING 权利人:CORTEVA AGRISCIENCE LLC 摘要:The present disclosure relates to improved processes for preparing 4-amino-6-(heterocyclic)picolinates.