A highly efficient and green protocol for the synthesis of 3,3′-(arylmethylene)-bis(2-hydroxynaphthoquinone) derivatives catalyzed by a dicationic molten salt, By Abdolkarim Zare

Research

Title	A highly efficient and green protocol for the synthesis of 3,3′-(arylmethylene)-bis(2-hydroxynaphthoquinone) derivatives catalyzed by a dicationic molten salt
Type	Article
Keywords	3,3′-(Arylmethylene)-bis(2-hydroxynaphthoquinone) {3,3′-(arylmethylene)-bis(2-hydroxynaphthalene-1,4-dione)}; dicationic molten salt; N,N,N′,N′-tetramethylethylenediaminium bis-hydrogensulfate ([TMEDAH2][HSO4]2); solvent-free
Journal	ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES
DOI	10.1515/znb-2020-0174
Researchers	Abdolkarim Zare (First researcher) , Aysoda Ghobadpoor (Second researcher)

Abstract

A highly efficient and green protocol for the synthesis of 3,3′-(arylmethylene)-bis(2-hydroxynaphthoquinone) {3,3′-(arylmethylene)-bis(2-hydroxynaphthalene-1,4-dione)} derivatives has been developed. The reaction of 2-hydroxynaphthoquinone (2-hydroxynaphthalene-1,4-dione) (2 eq.) and arylaldehydes (1 eq.) in the presence of the dicationic molten salt N,N,N′,N′-tetramethylethylenediaminium bis-hydrogensulfate ([TMEDAH2][HSO4]2) under solvent-free conditions afforded the mentioned compounds in high yields and relatively short reaction times.