[EMIm][BH3CN] Ionic Liquid as an Efficient Catalyst for the Microwave-
Assisted One-Pot Synthesis of Triaryl Imidazole Derivatives
摘要:
Abstract:
In this present investigation, efficient and general protocols for the synthesis of a series of
imidazoles 4(a-p) derivatives have been developed by cyclocondensation of aromatic aldehydes, benzil
and ammonium acetate in the existence of efficient [EMIm][BH3CN] ionic liquid catalyst under
microwave condition in good to excellent yields (91-97%). The structures of the synthesized compounds
have been confirmed by IR and NMR spectra. The significant features of this protocol are an
uncomplicated workup process, rate enhancement with high yields, and efficient catalysts. It was concluded
that [EMIm][BH3CN] is the finest catalyst under MW heating conditions.
Cyanoborohydride-Based Ionic Liquids as Green Aerospace Bipropellant Fuels
作者:Qinghua Zhang、Ping Yin、Jiaheng Zhang、Jean'ne M. Shreeve
DOI:10.1002/chem.201402704
日期:2014.6.2
ed ionicliquids (ILs) with properties and performances comparable to hydrazine derivatives were designed and synthesized. These new ILs as bipropellant fuels, have some unique advantages including negligible vapor pressure, ultra‐short ignition delay (ID) time, and reduced synthetic and storage costs, thereby showing great application potential as environmentally friendly fuels in bipropellant formulations