... were recorded on a HP5989 Hewlett-Packard instrument (Palo Alto, CA) with a chemical ionization detector ... J AX′ = 5.2 Hz); 2.7 (AB, 4 H, CH- CH 2 -N, J AB = 12,0 ... Scanning Calorimetry Temperature of Route of Compounds decomposition (°C) decomposition IV with R = H, Y ...