Direct arylation of cyclopentanones has been a long‐standing challenge because of competitive self‐aldol condensation and multiple arylations. Reported herein is a direct mono‐α‐C−H arylation of cyclopentanones with aryl bromides which is enabled by palladium/amine cooperative catalysis. This method is scalable and chemoselective with broad functional‐group tolerance. Application to controlled sequential
Organocatalytic asymmetric Michael addition of α-aryl cyclopentanones to nitroolefins for construction of adjacent quaternary and tertiary stereocenters
作者:Xiu-Qin Dong、Huai-Long Teng、Min-Chao Tong、He Huang、Hai-Yan Tao、Chun-Jiang Wang
DOI:10.1039/c0cc01987a
日期:——
The first asymmetric Michael addition of alpha-aryl cyclopentanones to nitroolefins for construction of adjacentquaternary and tertiarystereocenters has been achieved with excellent diastereo-/enantioselectivity.
Reductive Electrophotocatalytic α‐C−H Arylation of Cyclic Ketones with Aryl Chlorides
作者:Hasil Aman、Rui Chang、Juntao Ye
DOI:10.1002/cctc.202400635
日期:2024.9.23
A transitionmetal-freeapproach for α-arylation of cyclic ketones using readily available and inexpensive aryl chlorides as the arylating reagent is achieved under electrophotocatalysis.
Catalytic Diazoalkane-Carbonyl Homologation: Synthesis of 2,2-Diphenylcycloheptanone and Other Quaternary or Tertiary Arylalkanones and Spirocycles by Ring Expansion
作者:Jason S. Kingsbury
DOI:10.15227/orgsyn.098.0343
日期:——
C–C Bond Acylation of Oxime Ethers via NHC Catalysis