+++одна ХГС благодарю)

[fosfor25]

Господа,буду очень признателен)
Synthesis of 14 h-naphtho[1',2':5,6][1,3]oxazino-[3,2-a]benzimidazole, a new heterocyclic system
V. A. Osyanin, D. V. Osipov and Yu. N. Klimochkin
CHEMISTRY OF HETEROCYCLIC COMPOUNDS
Volume 47, Number 1, 108-111, DOI:

DOI:

http://dx.doi.org/10.1007/s10593-011-0727-y

[amik]