Qi Yan-xing
2004
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Journal
Chinese Journal of Synthetic Chemistry
Abstract
1,3-Di-{N-[bis(dimethylamino)methene]}benzoyl-diamide and 1,3-di-{N-[bis(dimethyl-amino)methane]}-benzoyl-disulfonamide were synthesized by the reaction of 1,1,3,3-tetramethyl-guanidine with isophthaloyl dichloride and 1,3-benzenedisulfonyl chloride separately. Their structures were confirmed by elementary analysis, IR, 1H NMR and EI-MS. 1H NMR titration indicated that 1 ∶1 stoichiometry complexes were formed between the guanidine derivative and dicarboxylic acids whose association constants range from 5.33 to 3.68×10 5.