Propargyl Alcohols as One-Carbon Synthons: Redox-Neutral Rhodium(III)-Catalyzed C–H Bond Activation for the Synthesis of Isoindolinones Bearing a Quaternary Carbon
作者:Xiaowei Wu、Bao Wang、Yu Zhou、Hong Liu
DOI:10.1021/acs.orglett.7b00089
日期:2017.3.17
C–H activation/subsequent [4 + 1] cyclization reactions between benzamides and propargyl alcohols are reported in which propargyl alcohols serve as unusual one-carbon units. This title transformation led to a series of isoindolinones bearing a quaternary carbon with moderate to good yields without the requirement for external metal oxidants. Due to the mild and simple reaction conditions, this reaction
Abstract An efficient Rh-(III)-catalyzed C-H functionalization of N-ethoxybenzamides with 1-alkynylcyclobutanols has been developed. Isoquinolone derivatives have been successfully synthesized through [4 + 2] annulation and ring opening reaction under mild conditions. The advantages of this efficient protocol include broad substrate scope and good to excellent yields. Graphical Abstract
Ruthenium-Catalyzed Redox-Neutral [4 + 1] Annulation of Benzamides and Propargyl Alcohols via C–H Bond Activation
作者:Xiaowei Wu、Bao Wang、Shengbin Zhou、Yu Zhou、Hong Liu
DOI:10.1021/acscatal.7b00031
日期:2017.4.7
transition-metal-catalyzed cycloaddition reactions, in which they generally serve as two-carbon reaction partners. Herein, we report ruthenium(II)-catalyzed redox-neutral [4 + 1] annulation of benzamides and propargyl alcohols, in which propargyl alcohols act as one-carbon units. This synthetic utility of propargyl alcohols led to a series of potentially bioactive N-substituted quaternary isoindolinones
Electrodimerization of <i>N</i>-Alkoxyamides for the Synthesis of Hydrazines
作者:Abudulajiang Nasier、Xihao Chang、Chang Guo
DOI:10.1021/acs.joc.1c01294
日期:2021.11.19
wide range of advanced, highly functionalized hydrazines. Remarkably, an N-centered radical generated from the cleavage of the N–H bond under electrolytic conditions plays a crucial role in this transformation. Furthermore, various N-alkoxyamides bearing different substituents are suitable in this transformation, furnishing the corresponding hydrazines in up to 92% yield.