One-pot and efficient synthesis of triazolo[1,2-a]indazole-triones via reaction of arylaldehydes with urazole and dimedone catalyzed by silica nanoparticles prepared from rice husk.
A novel synthesis of triazolo[1,2-a]indazole-1,3,8-trione derivatives by reaction of urazole, dimedone and aromatic aldehydes under conventional heating and microwave irradiation and solvent-free conditions using silica nanoparticles prepared from rice husk ash as catalyst is described. The new method features high yields, multicomponent reactions and environmental friendliness.
Department of Chemistry, Payame Noor University (PNU), P.O. Box 76175-559, Kerman, Iran. hooshanghamidian@yahoo.com
Hooshang
H
Hamidian
Samieh
S
Fozooni
Asadollah
A
Hassankhani
Sayed Zia
SZ
Mohammadi
D000447:Aldehydes / Q000737:chemistry*; D002384:Catalysis; D003512:Cyclohexanones / Q000737:chemistry*; D007191:Indazoles / Q000138:chemical synthesis* / Q000737:chemistry; D008872:Microwaves; D015394:Molecular Structure; D053758:Nanoparticles / Q000737:chemistry*; D012275:Oryza / Q000033:anatomy & histology / Q000737:chemistry*; D012822:Silicon Dioxide / Q000737:chemistry*; D014230:Triazoles / Q000737:chemistry*
D000447:Aldehydes; D003512:Cyclohexanones; D007191:Indazoles; D014230:Triazoles; D012822:Silicon Dioxide; C004774:dimedone; C421465:urazole