Ceric Ion Loaded MCM-41 Catalyzed Synthesis of Substituted Mono- and Bis-dihydropyrimidin-2(1H)-ones

Table 1

Synthesis of DHPMs using different catalysts under different reaction conditions^a.

S. no.	Catalyst	Solvent	Time (h)	Yield^b (%)
1	MCM-41	EtOH	6.0	44
2	SO4-MCM-41	EtOH	4.5	48
3	Ce-MCM-41	MeOH	4.0	61
4	Ce-MCM-41	EtOH	3.5	64
5	Ce-MCM-41	CHCl3	4.0	53
6	Ce-MCM-41	CH3CN	4.0	58
7	Ce-MCM-41	Solvent free	1.0	94

aCondensation of benzaldehyde, EAA, and urea with 20 mol% of Ce-MCM-41 (100 mg).
^bIsolated yield.