Synthesis of library of fused pyrimidines under conventional method and microwave irradiation.

Entry	Product	Time (h/min)		Yield (%)		ee%
		CHa	MWb	CH	MW
1		3.0 h	10 min	90	92	98
2		4.5 h	8.0 min	88	86	89
3		5.0 h	10 min	83	86	91
4		4.5 h	10 min	83	85	86
5		4.5 h	8.0 min	82	81	83
6		5.0 h	5.0 min	89	87	89
7		5.0 h	10 min	89	88	90
8		5.0 h	10 min	92	91	93
9		5.0	8.0 min	93	92	96
10		5.0 h	10 min	92	90	92
11		5.0 h	10 min	91	92	97
12		5.0 h	8.0 min	87	85	85
13		5.0 h	5.0 min	90	88	90
14		5.0 h	5.0 min	90	91	91
15		5.0 h	8.0 min	79	83	84
16		5.0 h	5.0 min	83	85	88
17		5.0 h	10 min	83	83	86
18		4.5	10 min	80	83	84
19		4.5	10 min	81	82	89
20		5.0	10 min	77	81	85

^aCH = conventional heating.

^bMW = microwave conditions.