Table 3. Scope of aromatic and alkyl substituents.

Entry	Starting material	Product	Yield a
1			90% (1 h)
2			84% (1 h)
3			88% (1 h)
4			90% (1 h)
5			93% (1 h)
6			31% b (1 h)
7			80% (1 h)
8			80% (18 h)
9			46% c , d 3 : 2 rr e (26 h)
10			65% c 1 : 1 rr e (22 h)
11			88% (1 h)
12			80% c 3 : 1 rr e (1 h)
13			78% c 4 : 1 rr e (1 h)

^aIsolated yield of products 26 after flash chromatography.

^bThe low yield was attributed to poor solubility of the product in most organic solvents.

^cCombined yield for both regioisomers.

^dThe major regioisomer was not assigned, as these compounds were not separable by chromatography.

^eThe ratio of regioisomers was determined by ¹H NMR of the crude reaction mixture.