14548-00-6Relevant academic research and scientific papers
Electrochemical-Oxidation-Promoted Direct N-ortho-Selective Difluoromethylation of Heterocyclic N-Oxides
Zhang, Dong,Cai, Jinlin,Du, Jinze,Wang, Qingdong,Yang, Jinming,Geng, Rongqing,Fang, Zheng,Guo, Kai
supporting information, p. 1434 - 1438 (2022/03/01)
An efficient and green electrochemical N-ortho-selective difluoromethylation method of various quinoline and isoquinoline N-oxides has been developed. In this method, sodium difluoromethanesulfinate (HCF2SO2Na) was used as the source of the difluoromethyl moiety, and various N-ortho-selective difluoromethylation quinoline and isoquinoline N-oxides were obtained in good to excellent yields under a constant current. In addition, the reaction was easy to scale up and maintained a good yield. Preliminary mechanism studies suggested that the reaction undergoes a free-radical addition and hydrogen elimination pathway.
An organocatalytic enantioselective direct α-heteroarylation of aldehydes with isoquinoline: N -oxides
Bertuzzi, Giulio,Pecorari, Daniel,Bernardi, Luca,Fochi, Mariafrancesca
supporting information, p. 3977 - 3980 (2018/04/23)
A new protocol for the enantioselective direct α-heteroarylation of aldehydes with isoquinoline N-oxides, via chiral enamine catalysis, has been successfully developed. High enantiomeric excesses and moderate to good yields were achieved for a variety of α-heteroarylated aldehydes.
PYRAZOLE DERIVATIVES AS MALT1 INHIBITORS
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Paragraph 1050; 1051, (2018/07/05)
Disclosed are compounds, compositions and methods for treating of diseases, syndromes, conditions, and disorders that are affected by the modulation of MALT1. Such compounds are represented by Formula (I) as follows: wherein R1, R2, R3, R4, R5, R6, R5, G1, and G2 are defined herein.
Regioselective Chlorination of Quinoline N-Oxides and Isoquinoline N-Oxides Using PPh3/Cl3CCN
Qiao, Kai,Wan, Li,Sun, Xiaoning,Zhang, Kai,Zhu, Ning,Li, Xin,Guo, Kai
, p. 1606 - 1611 (2016/04/05)
A novel method for the regioselective C2-chlorination of heterocyclic N-oxides has been developed. PPh3/Cl3CCN were used as chlorinating reagents and the desired N-heterocyclic chlorides were obtained smoothly in satisfactory yields. The reactions proceeded in a highly efficient and selective manner across a broad range of substrates demonstrating excellent functional group tolerance. In addition, this chlorination reaction can be used for the modification of N-heterocyclic scaffolds of appealing ligands and pharmaceuticals.
Palladium(II)-catalyzed C-C and C-O bond formation for the synthesis of C1-benzoyl isoquinolines from isoquinoline: N -oxides and nitroalkenes
Li, Jiu-Ling,Li, Wei-Ze,Wang, Ying-Chun,Ren, Qiu,Wang, Heng-Shan,Pan, Ying-Ming
supporting information, p. 10028 - 10031 (2016/08/15)
C1-Benzoyl isoquinolines can be generated via a palladium(ii)-catalyzed C-C and C-O coupling of isoquinoline N-oxides with aromatic nitroalkenes. The reaction proceeds through remote C-H bond activation and subsequent intramolecular oxygen atom transfer (OAT). In this reaction, the N-O bond was designed as a directing group in the C-H bond activation as well as the source of an oxygen atom.
Benzylation of heterocyclic N-oxides via direct oxidative cross-dehydrogenative coupling with toluene derivatives
Wan,Qiao,Sun,Di,Fang,Li,Guo
supporting information, p. 10227 - 10232 (2016/12/07)
A novel cross-dehydrogenative coupling (CDC) of heterocyclic N-oxides with toluene derivatives has been discussed, allowing for the facile synthesis of a broad range of structurally diverse C1-benzyl quinoline N-oxides, isoquinoline N-oxides and pyridine N-oxides, including two methylated quinoline N-oxides in particular. This protocol not only extends the application of toluenes in synthetic organic chemistry, but also offers an alternative method to prepare benzylated heterocyclic N-oxides without any metal involved, which is important in medicinal chemistry.
Site-selective sp2 and benzylic sp3 palladium-catalyzed direct arylation
Campeau, Louis-Charles,Schipper, Derek J.,Fagnou, Keith
, p. 3266 - 3267 (2008/10/09)
Palladium-catalyzed site selective arylation reactions of both sp2 and benzylic sp3 sites on azine and diazine N-oxide substrates are described that occur in good to excellent yield and with complete selectivity for reaction at the desired position. These studies have uncovered the need to properly control the metal to ligand ratio in sp2 arylation and necessitated a complete reinvestigation of all reaction parameters for sp3 arylation. From these studies, the choice of base emerged as a pivotal component for site selectivity, pointing to its intimate involvement in the mechanism of direct arylation. These site selective reactions have been validated in both divergent and sequential derivatizations of heterocyclic compounds represent an attractive alternative to other routes to this class of molecule. Copyright
SUBSTITUTED PYRIDONES AS INHIBITORS OF POLY(ADP-RIBOSE) POLYMERASE (PARP)
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Page/Page column 72, (2010/02/14)
The present invention discloses and claims a series of 2,3,5-substituted pyridone derivatives as defined herein. This invention also relates to methods of making these compounds. The compounds of this invention are inhibitors of poly(adenosine 5'-diphosphate ribose) polymerase (PARP) and are therefore useful as pharmaceutical agents, especially in the treatment and/or prevention of a variety of diseases, including diseases associated with the central nervous system and cardiovascular disorders.
HEPATITIS C VIRUS INHIBITORS
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Page 130, (2008/06/13)
Hepatitis C virus inhibitors are disclosed having the general formula:(I) wherein R1, R2, R3, R', B, Y and X are described in the description. Compositions comprising the compounds and methods for using the compounds toinhibit HCV are also disclosed.
