[EN] MACROCYCLIC OXIMYL HEPATITIS C SERINE PROTEASE INHIBITORS [FR] INHIBITEURS MACROCYCLIQUES, DE TYPE OXIMYLE, DES PROTÉASES À SÉRINE DU VIRUS DE L'HÉPATITE C
Synthesis of Azetidine Nitrones and Exomethylene Oxazolines through a Copper(I)-Catalyzed 2,3-Rearrangement and 4π-Electrocyclization Cascade Strategy
作者:Jin-Qi Zhang、Pei-Wen Qiu、Cui Liang、Dong-Liang Mo
DOI:10.1021/acs.orglett.2c03156
日期:2022.10.28
A variety of azetidine nitrones are prepared in moderate to good yields through copper(I) combined with 2-aminopyridine to catalyze skeletal rearrangement of O-propargylic oximes. Mechanistic studies reveal that the reaction undergoes a copper(I)-catalyzed tandem [2,3]-rearrangement, 4π-electrocyclization, ring opening, and recyclization over four steps in one pot. Substituents at the terminus of alkyne
Nitrenoid from Oxime: A Practical Synthesis of Planar Chiral Ferrocenyl Phenanthridines via Nitrene‐Involved Ring‐Expansion Reaction
作者:Na Li、Biqiong Hong、Jinbo Zhao、Zhenhua Gu
DOI:10.1002/anie.202215530
日期:2023.1.2
A new Grignard reagent-mediated synthesis of ferrocene-based phenanthridinesfromoximes was developed. The tertiary magnesium-zinc nitrenoid was proposed as the key intermediate, which underwent ring-expansion/rearrangement to form the pyridine skeleton.