Pyridine-functionalized MCM-41 as an efficient and recoverable catalyst for the synthesis of pyran annulated heterocyclic systems.
Pyridine-functionalized MCM-41 catalyzed reactions between tetracyanoethylene and various activated CH-acid compounds are described. These reactions afford the corresponding pyran annulated heterocyclic ring systems in high yields at room temperature within a few minutes. The work-up procedure is very simple and the products do not require further purification. The catalyst can be recycled and reused for several times without observable loss of performance.
Shaabani
Ahmad
A
Department of Chemistry, Shahid Beheshti University, G.C., P.O. Box 19396-4716, Tehran, Iran. a-shaabani@cc.sbu.ac.ir
Mohammadpour Amini
Mostafa
M
Ghasemi
Sabrieh
S
Ghadari
Rahim
R
Rezayan
Ali Hossein
AH
Fazaeli
Yousef
Y
Feizi
Shahzad
S
D002384:Catalysis; D005030:Ethylenes / Q000737:chemistry; D009570:Nitriles / Q000737:chemistry; D011714:Pyrans / Q000138:chemical synthesis* / Q000737:chemistry; D011725:Pyridines / Q000737:chemistry*; D012822:Silicon Dioxide / Q000737:chemistry*
D005030:Ethylenes; C509968:MCM-41; D009570:Nitriles; D011714:Pyrans; D011725:Pyridines; D012822:Silicon Dioxide; C003393:tetracyanoethylene; C023666:pyridine