Abstract
Abstract Cyclopropylacetylene and N,N,N′,N′,N′′,N′′-hexamethylguanidinium chloride (1a) react to give the orthoamide derivative 8c, in the presence of sodium hydride. 8c is transformed by elemental iodine to the vinylogous guanidinium salt 6f. Anion metathesis with the salts 5a, 5e, 6g delivers vinylogous guanidinium salts 5e–5i, 12a with counter ions derived from carbon acids (tricyanomethane, 1,1,3,3-tetracyano-propene). Phenylogous amidinium salts 15 guanidinium salts 19, 21 and the phenylogous orthoamide derivatives of formic acid 18 and carbonic acid 33 have been prepared.
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