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Triazine derivatives R 0655Green Synthesis and Self-Association of 2,4-Diamino-1,3,5-triazine Derivatives. -Nitriles (I) or (IV) are reacted with dicyandiamide (II) under microwave irradiation to form title compounds (III), (V) in good yields. The N-H···N interactions in (III) change from structure to structure. Pseudo-honeycomb networks to corrugated rosette layers are observed. -(DIAZ-ORTIZ, A.; ELGUERO, J.; FOCES-FOCES, C.; DE LA HOZ*, A.; MORENO, A.; MATEO, M. D. C.; SANCHEZ-MIGALLON, A.; VALIENTE, G.; New J. Chem. 28 (2004) 8, 952-958; Dep. Quim. Inorg., Org. Bioquim., Univ. Castilla-La Mancha, E-13071 Ciudad Real, Spain; Eng.) -C. Oppel 04-174

2H-Imidazole derivative 5 has been synthesized and characterized by the X-ray diffraction (XRD) method. The compound crystallizes in the monoclinic space group Cc with cell parameters a = 19.398(1), b = 8.890(1), c = 10.247(1), β = 110.76(1), Z = 4. The molecules are inter-linked through C-H· · ·O and C-H· · ·π interactions forming infinite chains.

Imidazole derivatives R 0190Microwave-Assisted Synthesis and Crystal Structures of 2-Imidazolines and Imidazoles. -An efficient and green protocol for the preparation of 2-imidazolines is presented. -(DE LA HOZ*, A.; DIAZ-ORTIZ, A.; MATEO, M. D. C.; MORAL, M.; MORENO, A.; ELGUERO, J.; FOCES-FOCES, C.; RODRIGUEZ, M. L.; SANCHEZ-MIGALLON, A.; Tetrahedron 62 (2006) 25, 5868-5874; Dep. Quim.