2172
YUSKOVETS, IVIN
In the IR spectra of crystalline compounds IIIa
groups. The UV spectra of IIIa IIIl in 96.5% ethanol
are characterized (Table 9) by the presence of two
absorption maxima at 209 218 and 271 275 nm (cf.
207 219 and 336 339 nm for initial compounds II).
IIIl (KBr, Table 9) we observed absorption bands in
1
the regions 3120 3380 and 1600 1700 cm , which
belong to stretching vibrations of the N H and C=O
Table 9. UV and IR spectra of 7-acetyl-6-R-6,7-dihydropyrimido[1,6-a][1,5]benzodiazepine-1,3-diones IIIa IIIl
Comp. UV spectrum (EtOH),
1
IR spectrum (KBr), , cm
4
no.
max, nm ( 10 )
IIIa 208 (2.64), 272 (1.38) 415, 436, 505, 531, 550, 571, 594, 621, 646, 689, 710, 725, 747, 761, 773, 781, 840,
862, 879, 907, 946, 975, 1001, 1025, 1049, 1063, 1082, 1114, 1159, 1169, 1189, 1208,
1236, 1277, 1300, 1318, 1354, 1370, 1385, 1431, 1444, 1455, 1494, 1593, 1663, 1713,
2919, 2926, 3084, 3233, 3433
IIIb 214 (2.30), 221 (2.15), 414, 440, 500, 529, 540, 560, 571, 588, 606, 620, 648, 689, 723, 748, 762, 773, 818,
272 (1.59)
841, 864, 877, 909, 943, 974, 1016, 1047, 1068, 1085, 1113, 1165, 1187, 1236, 1275,
1317, 1369, 1384, 1444, 1494, 1593, 1667, 1713, 1950, 1988, 2925, 3053, 3086, 3208,
3428
IIIc 207 (2.65), 226 (1.68), 420, 459, 505, 532, 569, 595, 604, 621, 648, 666, 688, 717, 748, 763, 830, 859, 904,
273 (1.37)
943, 978, 1031, 1072, 1078, 1114, 1172, 1231, 1265, 1304, 1325, 1352, 1371, 1385,
1404, 1439, 1495, 1514, 1594, 1660, 1699, 1883, 1960, 2050, 2841, 3000, 3053, 3089,
3510
IIId 209 (2.81), 267 (2.08) 424, 458, 475, 499, 544, 579, 588, 603, 619, 638, 677, 692, 710, 754, 766, 814, 876,
914, 948, 1035, 1053, 1087, 1111, 1164, 1192, 1208, 1274, 1317, 1364, 1382, 1409,
1446, 1458, 1495, 1527, 1554, 1579, 1602, 1618, 1650, 1665, 1681, 2974, 3052, 3172,
3420
IIIe 209 (2.97), 223 (2.44), 424, 481, 527, 532, 586, 617, 637, 671, 703, 726, 754, 771, 808, 820, 836, 880, 896,
273 (1.67)
918, 956, 1014, 1051, 1089, 1109, 1158, 1183, 1195, 1207, 1222, 1278, 1317, 1351,
1365, 1380, 1410, 1446, 1458, 1493, 1454, 1582, 1658, 1664, 1677, 2977, 3044, 3171,
3422
IIIf 208 (2.83), 272 (1.38) 420, 435, 451, 492, 532, 544, 567, 588, 621, 634, 660, 700, 730, 755, 817, 824, 845,
910, 942, 957, 1007, 1016, 1035, 1061, 1092, 1117, 1164, 1197, 1240, 1279, 1320,
1337, 1354, 1369, 1382, 1415, 1449, 1466, 1497, 1507, 1547, 1587, 1624, 1639, 1672,
1769, 2819, 3019, 3115, 3436
IIIg 207 (2.62), 274 (1.06) 436, 449, 486, 542, 575, 602, 615, 648, 698, 752, 774, 787, 813, 862, 890, 917, 953,
966, 1026, 1065, 1092, 1113, 1140, 1160, 1205, 1219, 1253, 1280, 1318, 1367, 1412,
1444, 1458, 1495, 1519, 1558, 1581, 1588, 1603, 1655, 1666, 1682, 2839, 2933, 2958,
3001, 3041, 3164, 3444
IIIh 207 (2.75), 274 (1.19) 418, 436, 450, 472, 492, 540, 559, 588, 614, 638, 670, 701, 717, 754, 772, 813, 834,
846, 875, 899, 914, 950, 979, 1014, 1034, 1059, 1088, 1113, 1142, 1187, 1210, 1220,
1259, 1276, 1314, 1366, 1412, 1433, 1445, 1459, 1494, 1554, 1583, 1619, 1664, 1682,
1767, 1778, 2844, 3050, 3166, 3350, 3444
IIIi 219 (2.36), 273 (1.72) 417, 430, 447, 513, 540, 571, 600, 615, 646, 660, 679, 713, 722, 743, 752, 762, 775,
808, 849, 886, 905, 920, 947, 976, 1014, 1048, 1065, 1076, 1115, 1148, 1169, 1188,
1240, 1271, 1309, 1338, 1374, 1437, 1447, 1457, 1493, 1504, 1597, 1526, 1670, 1714,
1954, 1989, 2872, 3098, 3153, 3204, 3423
IIIj 218 (2.47), 271 (1.14) 422, 437, 476, 499, 540, 557, 578, 601, 620, 639, 689, 699, 712, 739, 762, 798, 810, 876,
898, 916, 950, 1011, 1022, 1035, 1048, 1073, 1084, 1109, 1132, 1160, 1203, 1214,
1276, 1287, 1317, 1362, 1412, 1458, 1495, 1553, 1581, 1601, 1622, 1651, 1668, 1680,
2840, 2929, 3048, 3174, 3366
IIIk 208 (2.58), 261 (1.89) 430, 485, 497, 519, 542, 585, 593, 616, 636, 660, 695, 753, 770, 808, 878, 887, 916,
952, 966, 989, 1032, 1058, 1076, 1110, 1157, 1203, 1214, 1275, 1315, 1365, 1380,
1410, 1446, 1457, 1494, 1555, 1578, 1601, 1620, 1666, 1681, 2837, 3024, 3048, 3082,
3166, 3365, 3453
IIIl 207 (2.65), 273 (1.37) 424, 442, 466, 485, 499, 537, 558, 573, 599, 623, 655, 695, 728, 756, 764, 774, 800,
816, 826, 843, 858, 879, 900, 930, 949, 974, 1038, 1073, 1090, 1123, 1159, 1172, 1235,
1250, 1263, 1287, 1321, 1379, 1390, 1409, 1440, 1497, 1596, 1650, 1706, 1716, 1730,
2846, 2887, 3056, 3129, 3162, 3442
RUSSIAN JOURNAL OF GENERAL CHEMISTRY Vol. 77 No. 12 2007