Products of endic anhydride reaction with cyclic amines and their heterocyclization
摘要:
Products of reaction between bicyclo[2.2.1]hept-5-ene-eizdo-endo-2,3-dicarboxylic anhydride (endic anhydride) and cyclic amines were obtained. By an example of one of amido acids a conformational analysis was performed and character of hydro-en bonds was studied using quantum-chemical calculations by PM3 procedure. eiido-3-(4-Antipyrylcarbomoyl)-bicyclo[2.2.1]hept-5-ene-endo-2-carboxylic acid with a secondary arnide group was converted into the corresponding carboximide which was epoxidized by performic acid.
Products of endic anhydride reaction with cyclic amines and their heterocyclization
摘要:
Products of reaction between bicyclo[2.2.1]hept-5-ene-eizdo-endo-2,3-dicarboxylic anhydride (endic anhydride) and cyclic amines were obtained. By an example of one of amido acids a conformational analysis was performed and character of hydro-en bonds was studied using quantum-chemical calculations by PM3 procedure. eiido-3-(4-Antipyrylcarbomoyl)-bicyclo[2.2.1]hept-5-ene-endo-2-carboxylic acid with a secondary arnide group was converted into the corresponding carboximide which was epoxidized by performic acid.
Amido acids of norbornene series in reactions with sulfonyl azides
作者:I. V. Tkachenko、I. N. Tarabara、S. V. Shishkina、O. V. Shishkin、L. I. Kas’yan
DOI:10.1134/s1070428009080053
日期:2009.8
In reaction of amido acids from the norbornene series with arenesunfonyl azides alongside the expected N, N-dialkyl-5-oxo-exo-2-aryisulfonylamino-4-oxatricyclo[4.2.1.0(3,7)]nonane-endo-9-carboxamides (oxabrendanones) the formation of zwitter-ions with a structure of 5-(N,N-dialkyliminio)-exo-2-arylsulfonylamino-4-oxatricyclo[4.2.1.0(3,7)]nonane-endo-9-carboxylates came as a Surprise. The structure of compounds obtained was confirmed by the analysis of their IR and H-1 NMR spectra. The molecular structure of one among the zwitter-ions was established by XRD analysis.
Endic acid diamides. Synthesis and reactivity
作者:V. A. Pal’chikov、I. N. Tarabara、L. I. Kas’yan
DOI:10.1134/s107042800707007x
日期:2007.7
A number of symmetric and unsymmetric endo-cis-dicarboxamides of the norbornene series containing dimethyl- and diethylamine, morpholine, perhydroazepine, and p-bromoaniline fragments were synthesized starting from endic anhydride with the aid of N,N'-dicyclohexylcarbodiimide. Oxidation of these amides with organic peroxy acids according to Prilezhaev gave exo-2-hydroxy-5-oxo-4-oxatricyclo[4.2.1.0(3,7)]-nonane-endo-9-carboxylic acid salts. The structure of the obtained products was confirmed by IR and H-1 NMR spectroscopy.
Products of endic anhydride reaction with cyclic amines and their heterocyclization
作者:L. I. Kas’yan、V. A. Pal’chikov、I. N. Tarabara、O. V. Krishchik、A. O. Kas’yan、S. V. Shishkina、O. V. Shishkin
DOI:10.1134/s107042800611008x
日期:2006.11
Products of reaction between bicyclo[2.2.1]hept-5-ene-eizdo-endo-2,3-dicarboxylic anhydride (endic anhydride) and cyclic amines were obtained. By an example of one of amido acids a conformational analysis was performed and character of hydro-en bonds was studied using quantum-chemical calculations by PM3 procedure. eiido-3-(4-Antipyrylcarbomoyl)-bicyclo[2.2.1]hept-5-ene-endo-2-carboxylic acid with a secondary arnide group was converted into the corresponding carboximide which was epoxidized by performic acid.