Farajpour B, Heydarzadeh R, Hussain FHS, Notash B, Mirzaei P, Shiri M. Three-Component Reaction between 3-Acetylcoumarins, Amines, and Elemental Sulfur: A Designed Approach to 3-Amino-4
H-thieno[3,2-
c]coumarins.
J Org Chem 2024;
89:4375-4383. [PMID:
38470427 DOI:
10.1021/acs.joc.3c02406]
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Abstract
In this work, a series of novel 3-amino-4H-thieno[3,2-c]coumarins were designed and synthesized by a one-pot, catalyst-free, and three-component reaction of 3-acetylcoumarins with amines and elemental sulfur. Readily available starting materials, simple heating conditions, facile installation of a sulfur atom into the molecule using S8 as a sulfur source, acceptable functional group tolerance, and synthetically useful yields are some highlighted benefits of this process.
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