Microwave-Assisted Synthesis of Isopropyl β-(3,4-Dihydroxyphenyl)-α-hydroxypropanoate

Table 7

Experimental results for synthesis of 𝛽-(3,4-dihydroxyphenyl) pyruvic acid at different reaction time periods.

Level	Time (min)	Yield (%)
1	15	9.7
2	20	34.1
3	30	51.3
4	40	51.3