Ring Opening of Cyclic Sulfamidates with Magnesiated Heterocycles: Expedient Synthesis of Highly Functionalised Azaindolines and Azatetrahydroquinolines
摘要:
Magnesiated chloropyrimidine and chloropyridine derivatives, obtained by deprotonation with TMPMgCl center dot LiCl at room temperature, undergo facile ring-opening reactions with five-and six-membered N-Boc and N-Bn cyclic sulfamidates. After an acidic workup, the adducts undergo rapid intramolecular cyclisation on basification to give highly functionalised stereodefined azaindolines and azatetrahydroquinolines in good yields.
Ring Opening of Cyclic Sulfamidates with Magnesiated Heterocycles: Expedient Synthesis of Highly Functionalised Azaindolines and Azatetrahydroquinolines
Magnesiated chloropyrimidine and chloropyridine derivatives, obtained by deprotonation with TMPMgCl center dot LiCl at room temperature, undergo facile ring-opening reactions with five-and six-membered N-Boc and N-Bn cyclic sulfamidates. After an acidic workup, the adducts undergo rapid intramolecular cyclisation on basification to give highly functionalised stereodefined azaindolines and azatetrahydroquinolines in good yields.