Table 2.

Scope of the Halogenated Pyridinea^a

^aThe reactions were conducted as in Table 1. Isolated yields are shown.

^b4-Bromopyridine⋅HCl was used as the starting material.

^cThe reaction was performed on a 0.5 mmol scale.

^dFormed as a 1.7:1 mixture of olefin isomers.

^eThe reaction was performed on a 0.25 mmol scale.

^fFormed as a 3:1 mixture of olefin isomers.

^gIsolated as a 1.2:1 mixture of regioisomers. The gray asterisk indicates the connectivity of the minor regioisomer.