64488-19-3Relevant academic research and scientific papers
Zinc (II)-mediated selective O-benzylation of 2-Oxo-1,2-dihydropyridines systems
Zhou, Qifan,Du, Fangyu,Liang, Xinjie,Liu, Wenqiang,Fang, Ting,Chen, Guoliang
, (2018/08/21)
The selective O-benzylation of 2-oxo-1,2-dihydropyridines plays a critical role in organic synthesis of natural products and biological active molecules. Herein we report a novel ternary system of ZnO, ZnCl2 and N,N-diisopropylethylamine (DIEA), that is highly effective for selective O-benzylation of 2-oxo-1,2-dihydropyridines using abundant substituted benzyl halides and related substituted 2-oxo-1,2-dihydropyridines compounds. This process allows access to a variety of O-benzyl products under mild reaction conditions, which are important synthetic intermediates in the protection of functional groups, and represents a new method toward the development for the O-benzylation of 2-oxo-1,2-dihydropyridines.
Ionic liquid catalyzed 4,6-disubstituted-3-cyano-2-pyridone synthesis under solvent-free conditions
Chavan, Sunil S.,Degani, Mariam S.
experimental part, p. 1693 - 1697 (2012/03/11)
A green protocol for the synthesis of 4,6-disubstituted-3-cyano-2-pyridones from cyanoacetamides and 1,3-dicarbonyl compounds or chalcones using guanidine based ionic liquid as catalyst has been developed. In solvent-free conditions at 30 °C, [TMG][Lac] (1,1,3,3-tetramethylguanidine lactate) was found to have the highest catalytic activity among the ionic liquids including [TMG][Ac] (1,1,3,3-tetramethylguanidine acetate), [TMG][Pr] (1,1,3,3-tetramethylguanidine propionate), [TMG][n-Bu] (1,1,3,3-tetramethylguanidine n-butyrate) and [TMG][TFA] (1,1,3,3-tetramethylguanidine trifluoroacetate). The catalyst was recovered and recycled several times without significant loss of catalytic activity. Graphical Abstract: [Figure not available: see fulltext.]
Derivatives of 3-carboxy pyrid-2-ones
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, (2008/06/13)
Novel compounds belonging to the class of 1-substituted benzylpyrid-2-one-4,6-dialkyl and 4,5,6-trisubstituted-3-carboxylic acids, amides, esters and physiologically acceptable salts. These compounds possess biological activity and in particular are gametocides and plant growth regulators. Novel 1-substituted benzyl-3-cyano-4,5,6-trisubstituted pyrid-2-ones are also disclosed as intermediates.
