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. 2007 Aug 7;12(8):1720–1730. doi: 10.3390/12081720

Table 1.

Physico-chemical properties of compounds 3a-3l.

Compd. X Y Z W R1 R2 Position of C=N relative to X m.p. (˚C) color time(h) Yield (%)
3a CH2 H H H H H 3,3΄ >260 ochre 17 77
3b CH2 H H H H H 3,4΄ 248-250 light ochre 20 70
3c CH2 H H H H F 4,4΄ >260 ochre 0.5 99
3d CH2 H H H H F 3,3΄ >260 light brown 5 68
3e CH2 Cl Et Et H H 4,4΄ >260 orange-yellow 15 74
3f CH2 H H H Bn H 4,4΄ 180-182 orange 8 98
3g CH2 H H H Bn H 3,3΄ 204-206 oval-yellow 3 82
3h O H H H H H 3,4΄ >260 canary-yellow 28 91
3i O H H H H F 4,4΄ >260 brown-yellow 0.5 87
3j O H H H Bn H 4,4΄ 204-206 dark orange 1 88
3k CO H H H H H 4,4΄ 242-244 yellow 0.5 70
3l - - - - - - - >260 brick-red 19 80