أرسل هذا في رسالة قصيرة: Diastereoselective Addition of PhSCF<inf>2</inf>SiMe<inf>3</inf>to Chiral N- tert-Butanesulfinyl Ketimines Derived from Isatins: Synthesis of Enantioenriched gem-Difluoromethylenated Spiro-pyrrolidinyl and Spiro-piperidinyl Oxindoles