Kinetic and Mechanistic Investigation of Pyrano[2,3-d]pyrimidine Formation in the Presence of Catalyst under Novel One-Pot Three-Component Reaction
Figure 2
(a) The experimental absorbance values for reaction compounds 1, 2, 3, and catalyst in a mixture of ethanol and water. (b) The experimental absorbance change (dotted line) along with the second order fit curve (solid line) against time for the reaction between 4-thiobarbituric acid 1 (10−2 M), malononitrile 3 (10−2 M), 4-nitrobenzaldehyde 2 (10−2 M), and (10−2 M) catalyst, at 430 nm, 25.0°C, and in methanol.
