摘要:
4-Substitued azaindolines, which are isosteres of indolines, are useful synthetic building blocks that reduce the risk of bioactivation induced idiosyncratic toxicity have been prepared. Multigram routes to 2,3-dihydro-1H-pyrrolo[2,3-c]pyridine-4-triflate 16, 2,3-dihydro-1H-pyrrolo[2,3-b]pyridine-4-carbonitrite 20 and 4-chloro-2,3-dihydro-1H-pyrrolo[2,3-d]pyridazine 30 are outlined. (C) 2011 Elsevier Ltd. All rights reserved.