Comp. No. M.P.0C
Solvent
Color
Yield%
Mol. Formula
( M.Wt.)
Elemental analysis calc. / found%
C H N S
4a 276-277
EtOH
Pale brown
71.6
C10H9N3OS
(219)
54.79
54.88
4.11
4.22
19.17
19.00
14.61
14.60
4b 230-232
EtOH
Yellow
75.2
C11H11N3OS
(233)
56.65
56.66
4.72
4.66
18.02
18.22
13.73
13.71
4c 249-251
EtOH
Yellow
81
C13H15N3OS
(261)
59.77
59.55
5.74
5.89
16.09
15.99
12.26
12.26
4d 230-231
EtOH
Yellow
70.3
C17H23N3OS
(317)
64.35
64.34
7.25
7.45
13.24
13.33
10.09
10.11
8 266-268
EtOH
Pale yellow
61.1
C8H7N3OS
(193)
49.74
49.58
3.63
3.61
21.76
21.65
16.58
16.65
10 288-289
EtOH/ DMF
Yellowish green 63 C13H9N3OS
(255)
61.17
61.24
3.53
3.42
16.47
16.45
12.55
12.34
Table 1: Characterization data of compounds 4a-d, 8 and 10.