Synthesis of substituted γ-lactam via Pd(0)-catalyzed cyclization of alkene-tethered carbamoyl chloride
摘要:
Pd(0)-catalyzed carboiodonation of but-3-enylcarbamic chloride has been developed with NaI as additive, which provides a ready access to substituted gamma-lactam bearing an alkyl iodide group. This reaction features alkyl iodide reductive elimination as a key step in catalytic cycle, indicating the crucial role of additive NaI. (C) 2014 Elsevier Ltd. All rights reserved.
我们报道了使用 Mo(CO) 6作为羰基源的烯烃系链氨基甲酰氯的钯催化的氨基甲酰-氨基甲酰化/羧化/硫酯化。该反应通常以良好的官能团相容性和耐受不同的亲核试剂(胺、醇、酚、硫醇和水)进行,这为获得酰胺化/酯化/硫酯化/羧化羟吲哚或内酰胺提供了新途径无 CO 气体条件。此外,天然产物突变和不同的后期衍生化是重要的实用特征。
We report a palladium-catalyzed Heck-carbonylation of alkene-tethered carbamoyl chlorides by utilizing aryl formates as convenient CO surrogates. One C–O and two C–C bonds are constructed to give diversiform esterified oxindoles/γ-lactams bearing an all-carbon quaternary stereocenter under gas-free conditions. This transformation features a wide substrate scope and good functional group tolerance and
我们报道了利用芳基甲酸作为方便的 CO 替代物,钯催化的烯烃束缚的氨基甲酰氯的 Heck 羰基化反应。构建一个 C-O 和两个 C-C 键,可在无气体条件下产生带有全碳四元立构中心的多种酯化羟吲哚/γ-内酰胺。该转化具有较宽的底物范围和良好的官能团耐受性,可以轻松应用于后期功能化。