The kinetics of all reactions, shown as ratio of absorbance bands (A2262) to (A1526) as a function of time, are presented in Fig. . Meanwhile, Table presents the reaction times and yields. As it can be seen from Fig. and Table , as can be expected, higher concentrations of catalyst resulted in shorter total reaction time (58.5 h for 0.1 mol% and 4 h for 1 mol%) and lower ratio of (A2262)/(A1525) after the first step (10.43 for 0.1 mol% and 4.91 for 1 mol%). The reaction yields are similar, ranging from 53% to 67%, which is consistent with our previous work where we observed a similar range (62-70%) .