85600-01-7Relevant articles and documents
A Synthesis of acetamidines
Harjani, Jitendra R.,Liang, Chen,Jessop, Philip G.
experimental part, p. 1683 - 1691 (2011/05/12)
The condensation of primary amine with N,N-dimethylacetamide dimethyl acetal yields amixture of acetamidine and imidate ester. The product distribution in this reaction depends on the temperature, solvent, and structure of the primary amine. It is possible to suppress the formation of imidate ester by performing the reaction in the presence of excess dimethyl amine, yielding acetamidine as the exclusive product. For acetamidines that cannot be purified either by crystallization or distillation, this new method is necessary for the generation of pure acetamidines in good yields.
REVERSIBLE ROOM-TEMPERATURE IONIC LIQUIDS
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Page/Page column 85-86, (2008/12/07)
One aspect of the present invention relates to salts that are room-temperature ionic liquids (RTILs), methods of making them, and methods of using them in connection with temporary or permanent gas sequestration. Another aspect of the present invention relates to a class of solvents which can be transformed into RTILs by exposure to a gas, and methods of using them in connection with temporary or permanent gas sequestration.
AMIDINES. PART 13. INFLUENCE OF SUBSTITUTION AT IMINO NITROGEN ATOM ON pKa VALUES OF N1N1-DIMETHYLACETAMIDINES
Oszczapowicz, Janusz,Raczynska, Ewa
, p. 1643 - 1646 (2007/10/02)
20 N1N1-Dimethylacetamidines containing alkyl, aralkyl, or substituted phenyl groups have been synthesized, and their pKa values in 95.6percent ethanol (azeotrope) measured.The pKa values obtained were correlated with Hammett ? constants.The applicability of various ? values is discussed, and it is shown that for substituents at nitrogen ?o values should be used.It has also been shown that the pKa values of amidines correlate well with the pKa values of corresponding primary amines, and that this correlation can serve for the prediction of the pKa of amidine.Comparison of the correlations for N1N1-dimethylacetamidines with those for N1N1-dimethylformamidines indicate that sensitivity of the amidine group to substitution at the imino nitrogen atom depends to a considerable degree on substitution at a functional carbon atom.