81606-79-3Relevant academic research and scientific papers
Azolium salts functionalized with cyanomethyl, vinyl, or propargyl substituents and dicyanamide, dinitramide, perchlorate and nitrate anions
Gao, Ye,Gao, Haixiang,Piekarski, Crystal,Shreeve, Jean'ne M.
, p. 4965 - 4972 (2008/09/17)
A series of functionalized imidazolium and 1,2,4-triazolium salts with cyanomethyl, vinyl and propargyl substituents coupled with energetic anions, viz., perchlorate, nitrate, dicyanamide and dinitramide were prepared and characterized by NMR and IR spectroscopy, and elemental analyses. Since some melt -3. The standard enthalpies of formation of the salts were calculated by using the computationally feasible DFT(B3LYP) and MP2 methods in conjunction with an empirical approach based on calculated densities of the salts. These values range from ΔH°f = -56 (12a) to 851 (21c) kJ mol-1. Of the salts synthesized, the dicyanamides exhibit the highest positive heats of formation, but also the lowest densities. Wiley-VCH Verlag GmbH & Co. KGaA, 2007.
Solvent-free synthesis and structural characterization of azolyl-substituted pyrimidines
De la Hoz, Antonio,Blasco, Hector,Diaz-Ortiz, Angel,Elguero, Jose,Foces-Foces, Concepcion,Moreno, Andres,Sanchez-Migallon, Ana,Valiente, Gema
, p. 926 - 932 (2007/10/03)
Base-catalyzed trimerization of N-cyanomethylazoles under pressure and in solvent-free conditions afforded 4-amino-2,6-bis(azol-1-ylmethyl)-5-(azol-1-yl)pyrimidines (1-3) in 33-67% yields. The structures of these compounds was determined by a combination of NMR techniques and X-ray crystallography. The 4-amino groups show a restricted rotation around the C-N bond; the free energy of activation for this process was determined by variable temperature experiments. In the crystal structure of the pyrazol-1-yl derivative, the amino group shows a distorted planar geometry in both independent molecules and acts as a double hydrogen bond donor towards two of the three pyrazole rings, forming ribbons of R22(10) rings.
1,2,3-Benzothiadiazole derivatives
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, (2008/06/13)
Novel 1,2,3-benzothiadiazole derivatives of the formula STR1 in which Het has the meanings set forth in the specification, and addition products thereof with an acid or metal salt are very effective for the control of undesired microorganisms. Novel intermediates of the formulae STR2 in which Het1 and R5 have the meanings given in the specification.
