Table 3.

The present study involves the production of 3,4-dihydropyrimidin-2-(1H)-ones/thiones, carried out through the use of recyclable halide perovskite as a single-electron redox mediator.

Entry	X	R	Y	Product	Time (min)	Isolated yield %	M.p. °C	Lit. M.p. °C
1	4-Me	C2H5	O	4a	4	92	218–220	216–21738
2	4-O2N	CH3	O	4b	5	91	215–217	214–21626
3	4-F	CH3	S	4c	5	93	212–214	210–21232
4	3-OMe	C2H5	O	4d	6	94	205–207	205–20624
5	4-OMe	C2H5	O	4e	6	91	201–203	202–20325
6	H	C2H5	O	4f	5	93	199–201	200–20226
7	2-Cl	CH3	O	4g	7	89	250–252	248–25223
8	4-Me	CH3	O	4h	4	94	222–224	220–22239
9	3-O2N	C2H5	O	4i	4	94	226–228	225–22934
10	2,4-di-OMe	C2H5	O	4j	7	91	208–210	210–21138
11	4-F	C2H5	O	4k	4	92	175–176	174–17627
12	N,N-di-Me	C2H5	O	4l	6	91	252–254	255–25725
13	3-Me	C2H5	O	4m	4	90	202–204	203–20634
14	4-Cl	CH3	O	4n	8	87	207–209	205–20630
15	2-Cl	C2H5	O	4o	7	88	222–224	220–22323
16	3,4,5-tri-OMe	C2H5	S	4p	8	86	196–198	195–19732
17	2,4-di-OMe	C2H5	S	4q	7	88	165–167	163–16438
18	3-Cl	C2H5	O	4r	7	86	189–191	191–19323
19	4-OMe	C2H5	S	4s	7	89	149–151	150–15226
20	4-OH	C2H5	O	4t	8	86	231–233	230–23227
21	H	C2H5	S	4u	5	92	209–211	208–21026
22	4-OMe	CH3	O	4v	6	93	186–187	186–18928
23	2-O2N	CH3	O	4w	4	90	276–278	274–27728