Physicochemical properties of synthesized compounds 4(a–u).

Compound	M.P. (°C)	Conventional		MWI
		Time, h	(Yield%)	Time, min	(Yield%)
4a	112–114	8	81	5	95
4b	100–102	8	76	5	90
4c	116–118	8	70	4	91
4d	155–157	8	80	5	83
4e	182–184	8	76	4	87
4f	114–116	8	75	4	90
4g	146–148	10	74	5	85
4h	126–128	10	79	6	85
4i	120–122	10	66	6	72
4j	173–175	10	64	5	76
4k	138–140	10	71	5	92
4l	168–170	10	63	5	90
4m	150–152	10	75	6	96
4n	104–106	8	82	5	92
4o	131–133	9	78	4	94
4p	145–147	9	68	4	90
4q	160–162	8	80	6	85
4r	147–149	8	71	6	87
4s	153–155	10	68	4	95
4t	121–123	10	77	4	90
4u	152–154	10	70	6	72