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Figure 2 . Chemical formula and structural diagrams for (Z)-Ethyl 2-oxo-3-(quinolin-2(1H)-ylidene)propanoate (I), (Z)-ethyl 2-hydroxy-3-(quinolin-2-yl)acrylate (II) and (Z)-ethyl 2-hydroxy-3-(pyridin-2-yl)acrylate (III). |
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Figure 2 . Chemical formula and structural diagrams for (Z)-Ethyl 2-oxo-3-(quinolin-2(1H)-ylidene)propanoate (I), (Z)-ethyl 2-hydroxy-3-(quinolin-2-yl)acrylate (II) and (Z)-ethyl 2-hydroxy-3-(pyridin-2-yl)acrylate (III). |