Table 1.

Comparison between conventional heating and microwave irradiation for synthesis of compounds 4a–c, 8a–e, 11a,b, 13, and 15.

Compound No.	Reaction Times		Reaction Yields (%)
	Conventional Methods	Microwave	Conventional Methods	Microwave
2	2 h [30]	3 min	66 [30]	84
4a	4 h	5 min	70	85
4b	5 h	8 min	73	90
4c	5h	10 min	69	88
5	6 h	10 min	67	82
8a	6 h	8 min	74	95
8b	8 h	10 min	76	90
8c	10 h	12 min	68	92
8d	8 h	9 min	72	93
8e	10 h	13 min	75	90
11a	10 h	12 min	70	89
11b	15 h	15 min	60	81
13	10 h	15 min	67	88
15	13 h	20 min	60	85