Syntheses of Ring-Fluorinated Isoquinolines and Quinolines via Intramolecular Substitution: Cyclization of 1,1-Difluoro-1-alkenes Bearing a Sulfonamide Moiety - Ichikawa, Junji; Sakoda, Kotaro; Moriyama, Hiroko; Wada, Yukinori (Synthesis, 2006)