- Rhodium(III)-Catalyzed Annulation of Pyridinones with Alkynes via Double C-H Activation: A Route to Functionalized Quinolizinones
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A Rh(III)-catalyzed oxidative annulation of pyridin-2(1H)-ones with alkynes via double C-H activation to produce highly functionalized 4H-quinolizin-4-ones is disclosed. This reaction features easily available starting materials, simple manipulation, a relatively wide substrate scope, and good functional group tolerance. The application of this protocol is demonstrated by the synthesis of a known fluorescent quinolizino[3,4,5,6-ija]quinolinium salt.
- Li, Juan,Yang, Yudong,Wang, Zhigang,Feng, Boya,You, Jingsong
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supporting information
p. 3083 - 3086
(2017/06/23)
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- Iron-catalyzed regioselective direct arylation at the C-3 position of N-alkyl-2-pyridone
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A number of pharmaceutical compounds possess an arylated 2-pyridone moiety. The existing reports using expensive starting materials and/or superstoichiometric metal salts have prompted us to explore a possible user-friendly method for their synthesis. In this report, we demonstrate an easy-to-handle reaction condition with an iron catalyst for the exclusive generation of C-3-arylated pyridone via C-H functionalization.
- Modak, Atanu,Rana, Sujoy,Maiti, Debabrata
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p. 296 - 303
(2016/09/09)
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- PROLINE DERIVATIVES
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The invention relates to novel compounds of formula (I), wherein X, Y, R1, R2, R3, R4 and n have the meaning cited in claim 1, are inhibitors of the coagulation factor Xa and can be used for the prophylaxis and/or therapy of thromboembolic diseases and for the treatment of tumours.
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Page/Page column 38
(2008/06/13)
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- FACTOR XA INHIBITORS
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The present invention is directed to compounds represented by Formula I and pharmaceutically acceptable salts, solvates, hydrates, and prodrugs thereof which are inhibitors of Factor Xa. The present invention is also directed to and intermediates used in making such compounds, pharmaceutical compositions containing such compounds, methods to prevent or treat a number of conditions characterized by undesired thrombosis and methods of inhibiting the coagulation of a blood sample.
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Page/Page column 193-194
(2008/06/13)
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- An improved Ullmann-Ukita-Buchwald-Li conditions for CuI-catalyzed coupling reaction of 2-pyridones with aryl halides
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An effective CuI-trans-N,N′-dimethylcyclohexane-1,2-diamine (DMCDA)-K2CO3-catalyzed coupling reaction of 2-pyridones with aryl halides is described. Under our conditions, DMCDA was found to be an effective catalyst that facilitates the coupling reactions even in toluene, a common industrial solvent. In addition, 3-bromopyridine could also be coupled effectively under these conditions, indicating that the catalytic reactivity of this system is high. The reaction could be applied for polymer modification and iterative oligo-pyridone synthesis.
- Wang, Po-Shih,Liang, Chih-Kai,Leung, Man-Kit
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p. 2931 - 2939
(2007/10/03)
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- Phenyl derivatives
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Novel compounds of the formula I in which W, X, Y, T, R1 and R2 are as defined in Patent claim 1, are inhibitors of coagulation factor Xa and can be employed for the prophylaxis and/or therapy of thromboembolic disorders.
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