Table 1.

Definition of the X, R and Ar Groups, Yields and ⁷⁷Se-NMR Data for Compounds 5–15.

Compound	X	R	Ar	Yield (%)	77Se-NMR (δ, ppm)
1	-	CH3	-	99	-
2	-	C2H5O(O)C	-	99	-
3	-	CH3	-	87	607.7
4	-	C2H5O(O)C	-	90	382.1
5	Cl	CH3	C6H5	92	575.3
6	Br	CH3	4-ClC6H4	96	571.1
7	Br	CH3	4-MeOC6H4	97	567.1
8	Br	CH3	4-MeC6H4	98	568.1
9	Br	CH3	4-NO2C6H4	93	590.1
10	Br	CH3	2,5-di-MeOC6H3	90	572.7
11	Cl	CH3	2,4-di-ClC6H3	91	578.9
12	Br	CH3	4-BrC6H4	95	577.8
13	Cl	C2H5O(O)C	C6H5	96	679.9
14	Br	C2H5O(O)C	4-ClC6H4	96	684.2
15	Br	C2H5O(O)C	4-MeOC6H4	95	675.7