3-Arylindolizines were prepared by one-pot domino reactions from
benzyl halides with pyridine (or isoquinoline) and cyclic or acyclic
dihalide-substituted electron-deficient alkenes in the presence of potassium carbonate via in
situ generated N-ylide intermediate. Both electron-donating and
electron-withdrawing groups are tolerated in the aryl ring of benzyl
halides. The yields range from moderate to high.
N-ylides - indolizine polycycles - 1,3-dipolar
cycloadditions - one-pot reaction - electron-deficient
alkenes