H, Ar-H), 0.00--0.00 (m, 0H, Ar-H). ^00^C-NMR (000 MHz, CDCl~0~) δ (ppm): 00.00 (CH~0~), 00.00 (CH~0~), 000.00 (0CH), 000.00 (0CH), 000.00 (CH), 000.00 (CH), 000.00 (0CH), 000.00 (0CH), 000.00 (C), 000.00 (C), 000.00 (CH), 000.00 (C), 000.00 (C), 000.00 (C), 000.00 (C), 000.00 (C), 000.00 (C), 000.00 (C=O). Anal. calcd. for C~00~H~00~N~0~O~0~ (000.00): C, 00.00; H, 0.00; N, 00.00. Found: C, 00.00; H, 0.00; N, 00.00%*.*  *0,0-Dimethyl-0-(0-nitrobenzylideneacetyl)-0-phenyl-0H-pyrazolo\[0,0-b\]pyrazine* (**00