ABSTRACT
One-pot reaction between 3,4-dihydro-3-((benzylamino)methylene)-4-thioxochromen-2-ones and alkyl-2-cyanoacetates in the presence of an excess amount of triethylamine and a catalytic amount of nano-ZnO particles in acetonitrile leads to new 2-amino-4H-thiopyran derivatives in high to excellent yields within 15 min.
GRAPHICAL ABSTRACT
![](/cms/asset/a4108c70-c73f-46af-bc2b-ae5efc7a97b6/gsrp_a_1502293_uf0001_c.jpg)
Disclosure statement
No potential conflict of interest was reported by the author(s).