Table 1: Physico-chemical data of compounds (3a-g).

S. No	Comp	Structure	Yield %	M.P. °C	Molecular formula	Colour	Ref. (M.P.) °C
1	3a		70	146-149	C11H10ClN3OS	White	144-148 [23]
2	3b		67	225-227	C12H12ClN3OS	Creamish white	224-227 [23]
3	3c		68	175-179	C12H12ClN3OS	Pinkish white	170-172[23]
4	3d		60	188-190	C12H12ClN3OS	Light yellow	170-175 [23]
5	3e		64	235-238	C12H12ClN3O2S	Creamish white	240-242 [23]
6	3f		58	245-249	C12H12ClN3O2S	Cream	256-258 [23]
7	3g		60	232-235	C12H12ClN3O2S	Creamish white	240-244 [23]