Three-Component Reactions of 7-Hydroxy Coumarin Derivatives, Acetylenic Esters and Aromatic Aldehydes in the Presence of NEt3

Journal of the Brazilian Chemical Society

Sakineh Asghari¹  Robabeh Baharfar¹  Samaneh Ahangar Darabi¹  Reza Mohammadian¹ 

关键词: 7-hydroxy coumarins;    dialkyl acetylenedicarboxylates;    aromatic aldehydes;    three-component reaction;   

DOI  :  10.5935/0103-5053.20140252

来源: SciELO

【 摘 要 】

Three-component reactions of 7-hydroxy-4-methyl coumarin or 7-hydroxy-4-(trifluoromethyl) coumarin, dialkyl acetylenedicarboxylates and aromatic aldehydes in the presence of NEt3 lead to dialkyl (2E)-2-[aryl(hydroxy)methyl]-3-[(4-methyl-2-oxo-2H-chromen-7-yl)oxy]but-2-ene dioate or dialkyl (2E)-2-[aryl(hydroxy)methyl]-3-{(2-oxo-4-(trifluoromethyl)-2H-chromen-7-yl)oxy} but-2-ene dioate in good yields under mild reaction conditions.

【 授权许可】

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