| 摘要 |
The invention relates to hexaorgano guanidinium organocarbonates according to formula (I), to a method for the production of same, and to the use thereof. To this end, R1 to R5 denote alkyl, allyl, vinyl, benzyl, aryl or heteroaryl; wherein the groups R1 and R2, R3 and R4 or R2 and R3, also jointly with nitrogen atoms of the guanidine skeleton, can form cyclical secondary amino groups, R6 denotes alkyl, benzyl or allyl, and R7 denotes alkyl, benzyl, allyl, aryl or heteroaryl. The hexaorgano guanidinium organocarbonates according to the invention are produced by reacting a pentaorgano guanidine with a diorganocarbonate, wherein the reaction can be carried out in solution or in the gas phase. The method according to the invention is atom-economical and avoids the formation of by-products. The hexaorgano guanidinium organocarbonates can be used to produce other hexaorgano guanidinium salts. By the reaction with an acid or an acid salt, anion metathesis occurs with decarboxylation of the organocarbonate. In this way, the reaction equilibrium is shifted to the product side. Both the hexaorgano guanidinium organocarbonates according to the invention and the hexaorgano guanidinium salts obtainable therefrom are highly pure, in particular halide-free, ionic liquids. |
