Palladium(II)-catalyzed reaction of
-amino (2-alkynylphenyl)methylphosphonate provides a novel and efficient routeto 2,3-disubstituted-2
H-isoindol-1-ylphosphonate via 5-
exo-cyclization and [1,5]-H
shift; while 2,3-disubstituted-1,2-dihydroisoquinolin-1-ylphosphonate is afforded through 6-
endo-cyclization utilizing silver triflate as catalyst.