Propylphosphonium hydrogen carbonate ionic liquid supported on nano-silica as a reusable catalyst for the efficient multicomponent synthesis of fully substituted pyridines and bis-pyridines
作者:Fahime Rahmani、Iraj Mohammadpoor-Baltork、Ahmad R. Khosropour、Majid Moghadam、Shahram Tangestaninejad、Valiollah Mirkhani
DOI:10.1039/c5ra03569d
日期:——
(PPHC–nSiO2), was prepared and characterized by FT-IR, TGA, SEM and ICP techniques. The resulting catalyst was used for the efficient synthesis of fully substituted pyridines via a one-pot multicomponent reaction of aldehydes, malononitrile, and thiols under solvent-free conditions. Expedient synthesis of bis-pyridines from dialdehydes and/or dithiols by using this catalytic system can be considered
制备了一种新型的负载型based基离子液体,载于纳米二氧化硅(PPHC- n SiO 2)上的碳酸氢丙propyl离子液体,并通过FT-IR,TGA,SEM和ICP技术进行了表征。通过在无溶剂条件下醛,丙二腈和硫醇的一锅多组分反应,将所得催化剂用于有效合成全取代的吡啶。通过使用该催化体系由二醛和/或二硫醇方便地合成双吡啶可被认为是该方法的显着优点。此外,即使在第5个循环后也没有明显的催化活性损失。