Alkyl (3d,e) and aryl (3f) substituents were well tolerated. The presence of an electron-donating alkoxy group was also tolerated, albeit that 3g was formed in a slightly lower yield, as was bromo-substituted 3h. Finally, isoquinoline-N-oxide and quinoline-N-oxide gave somewhat lower yields of the substitution products 3i,j, the latter as an effectively equimolar mixture of regioisomers.