Synthesis of Novel Symmetrical and Unsymmetrical o-Phthalic Acid Diamides

Table 2

Characterization data, reaction time, and yields of 3a–3e obtained 1 and 2a–2e.

Entry	Starting material used	Product obtained	Time (min)	Yield^≠	M.P (°C)
1	2a	3a	10–12	85	145–148
2	2b	3b	12–15	85	>220
3	2c	3c	15–18	83	>220
4	2d	3d	15–18	80	>220
5	2e	3e	15–20	81	>220

≠Refers to yields of crude products only.