This manuscript discloses an efficient construction of the spirocyclic oxindole-dihydropyranone scaffold via the N-heterocyclic carbene (NHC)-catalyzed oxidative γ-functionalization of α,β-unsaturated aldehydes bearing γ-H with isatin derivatives. The ready availability of the starting materials, easy work-up, mild reaction conditions and the potential utilization value of the products make this strategy attractive.
本稿件揭示了一种通过N-杂环卡宾(NHC)催化的氧化性γ功能化反应,高效构建螺环氧
吲哚-二氢
吡喃酮骨架的方法,该方法利用具有γ-H的α,β-不饱和醛与
靛红衍
生物反应。起始原料易得、操作简便、反应条件温和以及产物潜在的应用价值,使得这一策略颇具吸引力。