504-74-5Relevant articles and documents
Synthesis of vicinal diamino-endo, cis-norbornene derivatives
Hossain, Delwar,Lavoie, Gino G.
experimental part, p. 1200 - 1210 (2012/04/10)
The synthesis of 2,3-disubstituted-endo,cis-norborn-5-ene derivatives is described. Cyclic ureas and cis vicinal diamines substituted with p-tolyl and perfluorophenyl rings were prepared. The use of potassium carbonate as an innocuous CO source for the formation of a cyclic urea was demonstrated. Copyright Taylor & Francis Group, LLC.
An NMR study of sequential intermediates and collateral products in the conversion of 1,3,6,8-tetraazatricyclo[4.4.1.13,8]dodecane (TATD) to 1,3,6,8-tetraazatricyclo[4.3.1.13,8]undecane (TATU)
Rivera, Augusto,Nú?ez, Martín E.,Avella, Eliseo,Ríos-Motta, Jaime
, p. 2154 - 2158 (2008/09/20)
In situ 1H nuclear magnetic resonance spectroscopy was used to investigate the processes that occur during the synthesis of 1,3,6,8-tetraazatricyclo[4.3.1.13,8]undecane (TATU). NMR analysis showed a reaction mixture containing more than one compound. The production of these intermediates and collateral products was rationally supported by a careful 1H NMR monitoring study. We characterized 1,3,5-triazabicyclo[3.2.1]octane (TABO, 4) and 3-(2-aminoethyl)-1,3,5-triazabicyclo[3.2.1]octane (AETABO, 7) by 1H and 13C NMR in D2O solution inside the NMR sample tube, as an intermediate and collateral product of the reaction, respectively. Further, a reaction of 1,3,6,8-tetraazatricyclo[4.4.1.13,8]dodecane (TATD) with 15N-labeled ammonium chloride was carried out. The 15N NMR and GC-MS experiments indicated that 15N was incorporated into TATU, TABO, and urotropine.
Acyl Derivatives of Cyclic Secondary Amines. Part 1. Dipole Stabilization of Anions: the Cumulative effect of Two Stabilizing Groups
Katritzky, Alan R.,Murugan, Ramiah,Luce, Hudson,Zerner, Michael,Ford, George P.
, p. 1695 - 1700 (2007/10/02)
Lithiation studies with diacylimidazolidines, diacylhexahydropyrimidines, and triacylhexahydro-1,3,5-triazines indicate that no substantial increase in carbanion stability occurs as a result of the introduction of the second stabilizing group.Relative energies are calculated for three conformers of lithiated diformylimidazolidine, six conformers of lithiated diformylhexahydropyrimidine, and eight conformers of lithiated triformylhexahydro-sym-triazine.For the six-membered rings, conformers with equatorial lithium are always more stable those those with axial lithium.Although equatorial syn-syn conformers (with double O-Li co-ordination) are more stable than equatorial syn-anti, the difference is significantly less than that found between the corresponding syn-anti and (least stable) anti-anti conformers.