Oxygen‐Involved Oxidative Deacetylation of α‐Substituted β‐Acetyl Amides – Synthesis of α‐Keto Amides
摘要:
Abstractα‐Substituted β‐acetyl amides could undergo CC bond cleavage to form α‐keto amides when treated with copper(II) chloride (CuCl2) and boron trifluoride diethyl etherate (BF3⋅OEt2) under an oxygen atmosphere. The yield can be increased by the addition of tert‐butyl hydroperoxide which alone can also effect the reaction. The reaction provides a new protocol for the synthesis of α‐keto amides.magnified image
α‐Arylation of Carbonyl Compounds through Oxidative C−C Bond Activation
作者:Jing Li、Adriano Bauer、Giovanni Di Mauro、Nuno Maulide
DOI:10.1002/anie.201904899
日期:2019.7.15
A synthetically useful approach for the direct α‐arylation of carbonylcompounds through a novel oxidative C−C bondactivation is reported. This mechanistically unusual process relies on a 1,2‐aryl shift and results in all‐carbon quaternary centers. The transformation displays broad functional‐group tolerance and can in principle also be applied as an asymmetric variant.