Direct methylation of imidazole imides renders excellent yields methodology provides a simple, perfluorosulfonyl imide anions. using methylated difunctional or tetrafunctional perfluorosulfonyl of the corresponding room temperature ionic liquids (RTILs). This halide-free route to several novel RTILs containing multifunctional (C) 2011 Elsevier B.V. All rights reserved.