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

Table 3

Ce-MCM-41 catalyzed synthesis of 1,4-phenylene-bis-dihydropyrimidinones^a.

S. no.	𝑅^1	𝑋	Product	Time (h)	Yield (%)^b
1	Et	O	5a	1.0	84
2	Et	S	5b	1.25	80
3	Me	O	5c	1.0	82
4	Me	S	5d	1.25	79

aCe-MCM-41 catalyzed Biginelli reaction under solvent-free conditions.
^bIsolated yields.