Facile Synthesis of Hydrazine Derivatives of 5H-Pyrrolo[3,4-b]pyrazine and 1H-Pyrrolo[3,4-b]quinoxaline. -(HORDIYENKO*, O. V.; RUDENKO, I. V.; ZAMKOVA, I. A.; DENISENKO, O. V.; BIITSEVA, A. V.; ARRAULT, A.; TOLMACHEV, A. A.; Synthesis 45 (2013) 24, 3375-3382, http://dx.doi.org/10.1055/s-0033-1340042 ; Taras Shevchenko Natl. Univ., Kiev 01601, Ukraine; Eng.) -U. Scheffler 23-139