[Msim]X: As a versatile catalyst and reagent

(A) In 2010, Zolfigol et.al introduced [Msim]Cl as an novel and efficient ionic liquid by the condensation of 1-methyl imidazole and chlorosulfonic acid in CH2Cl2 as solvent at room temperature. The catalyst was used in a convenient method for the synthesis of bis(indolyl)methanes by the reaction of indole and aldehyde in the presence of described ionic liquid [Msim]Cl (25 mol%) at room temperature. The mentioned ionic liquid was also applied for the preparation of N-sulfonyl imines via the condensation of sulfonamides with aldehydes as well as isatin under solvent- free conditions