Table 1:
Experimental Condition for the Preparation of 4-Ethoxy-Cinnamic Acid and 4-Propoxy-Cinnamic Acid.
Run
4-Ethoxy-Benzadehyde
/ Mol
Malonic Acid
/ Molar
Pyridine
/ Molar
β-Alanine
a
/ %
1
7.20
17.8
39.7
8
2
7.20
17.8
39.7
4
3
7.20
17.8
39.7
2
a
% β-alanine = (molar of β-alanine/ molar of 4-ethoxy or propoxy-benzadehyde)*100%