Bis(imino)pyridine (BIMP) Fe(II) catalyses one-pot green condensation

of resorcinol, malononitrile, aromatic aldehydes and cyclohexanone

SAMAN DAMAVANDI^a,* and REZA SANDAROOS^b

^aDepartment of Chemistry, Sarvestan Branch, Islamic Azad University, Sarvestan, Iran

^bDepartment of Chemistry, Faculty of Science, Birjand University, Birjand, Iran

e-mail: Saman_Damavandi@yahoo.com; R_Sandaroos@yahoo.com

Abstract. A novel, efficient and green approach for the synthesis of pyranopyridine derivatives through

one-pot, four-component reaction of resorcinol, malononitrile, aromatic aldehydes and cyclohexanone using

bis(imino)pyridine (BIMP) Fe(II) catalyst under solvent-free and ultrasonic irradiation is described.

Graphical Abstract. A rapid, green and efficient synthesis of 11-amino-8,9,10,12-tetrahydro-12-

aryl-7H-chromeno[2,3-b]quinolin-1-ol derivatives through a multicomponent

cyclocondensation of resorcinol, malononitrile, aromatic aldehydes and

cyclohexanone in the presence of (4-nitro-2,6-diacetylpyridinebis(2,4,6-

trimethylanil)) FeCl₂ under ultrasonic irradiation has been described.

Keywords. Pyranopyridine; four-component; one-pot; BIMP catalyst.