Nanoporous TiO2 containing an ionic liquid bridge as an efficient and reusable catalyst for the synthesis of N,N′-diarylformamidines, benzoxazoles, benzothiazoles and benzimidazoles†,10.1039/C8NJ00171E

热搜：

Lactoyl-CoA 全氟丁基戊烷白叶藤碱全氟己基辛烷新白叶藤碱壳寡糖特色专题-生物多肽

Nanoporous TiO2 containing an ionic liquid bridge as an efficient and reusable catalyst for the synthesis of N,N′-diarylformamidines, benzoxazoles, benzothiazoles and benzimidazoles†

M. Mazloumi,F. Shirini,O. Goli-Jolodar,M. Seddighi

New Journal of Chemistry Pub Date : 03/15/2018 00:00:00 , DOI:10.1039/C8NJ00171E

Abstract

In this work, a green and efficient procedure is reported for the preparation of N,N'-diarylformamidines, benzoxazoles, benzothiazoles, and benzimidazoles using nanoporous TiO₂ containing an ionic liquid bridge. This reagent is prepared via the modification of nanoporous TiO₂ with bis-3-(trimethoxysilylpropyl)-ammonium hydrogen sulfate (TiO₂-[bip]-NH₂⁺ HSO₄⁻). The procedure gave the products in excellent yields in very short reaction times under solvent-free conditions. The reusability of the catalyst is the other important feature of the reported method.