Аннотация
A new environmentally friendly method to synthesize long-chain and
functionalized alkylsulfate ionic liquids is reported. The two-step
synthesis comprises the synthesis of a methylsulfate or
ethylsulfateionic liquid by direct alkylation in the first step. In the
second step, this intermediate is transformed in a transesterification
reaction, using different functionalized and nonfunctionalized
alcohols, to the corresponding new alkylsulfate melts. The entire
reaction sequence is halide-free and liberates methanol or ethanol as
the only by-products. Moreover, it is carried out in a solvent-free
manner and scale-up is straight forward.
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