|
|
A New Approach For the Synthesis of 3,4-Dihydropyrano[C]Chromenes and Biscoumarins Using {[2,2’-Bpyh][C(Cn)3]2} As A Bifunctional Nanostructured Ionic Liquid Catalyst
|
|
|
|
|
نویسنده
|
Mansouri Navid ,Baghery Saeed ,Zolfigol Mohammad Ali
|
منبع
|
Nanochemistry Research - 2018 - دوره : 3 - شماره : 2 - صفحه:170 -177
|
|
|
چکیده
|
[2,2’-bipyridine]-1,1’-diium tricyanomethanide {[2,2’-bpyh][c(cn)3]2} as a bifunctional nanostructured ionic liquid catalyst (0.5 mol%) was used for the synthesis of 3,4-dihydropyrano[c]chromenes (14 examples) under solvent-free condition at room temperature in high yield (82-91%) and short reaction time. in addition, the described ionic liquid catalyst was also applied for the synthesis of biscoumarins (8 examples) under the same reaction condition in good yield (87-91%) and short reaction time. the {[2,2’-bpyh][c(cn)3]2} as a catalyst was attained by the reaction of 2,2’-bipyridine (5 mmol) and 5 ml of an aqueous solution of tricyanomethane (5 mmol) at room temperature for 3 hours. the {[2,2’-bpyh][c(cn)3]2} as a catalyst was obtained with high purity approved by ftir, 1h nmr, 13c nmr, mass, tg, dta, xrd, sem, tem analyses and melting-point determination. the catalyst was recovered in excellent yield and was used in the revealed reaction 5 times without the need of additional catalyst. the major advantages of the presented procedure are efficient catalysis and good cost efficiency.
|
کلیدواژه
|
[2 ,2’-Bipyridine]-1 ,1’-Diium ,Tricyanomethanide ,4-Dihydropyrano[C]Chromene ,Biscoumarin ,Ionic Liquid ,Solvent-Free Condition
|
آدرس
|
Bu-Ali Sina University, Faculty Of Chemistry, Department Of Organic Chemistry, Iran, Bu-Ali Sina University, Faculty Of Chemistry, Department Of Organic Chemistry, Iran, Bu-Ali Sina University, Faculty Of Chemistry, Department Of Organic Chemistry, Iran
|
پست الکترونیکی
|
mzolfigol@yahoo.com
|
|
|
|
|
|
|
|
|
|
|
|
Authors
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|