α-Quaternary Mannich Bases through Copper-Catalyzed Amination-Induced 1,2-Rearrangement of Allylic Alcohols
作者:Wei-Zhi Weng、Jian-Guo Sun、Ping Li、Bo Zhang
DOI:10.1002/chem.201702428
日期:2017.7.21
A novel copper‐catalyzed amination‐induced 1,2‐rearrangement reaction of allylic alcohols has been developed under simple and mild conditions. The commercially available N‐fluorobenzenesulfonimide (NFSI) is employed as an amination reagent. In this transformation, not only alkyl, but also aryl substituents can efficiently undergo 1,2‐carbon atom migration, thereby providing an efficient and powerful
Electrochemical Oxidative Arylsulfonylation and 1,
<scp>2‐Alkyl</scp>
Shift Sequences of Alkenyl Cyclobutanols for the Synthesis of
<scp>β‐Sulfonated</scp>
Cyclopentanones
作者:Yebin Kim、Dae Young Kim
DOI:10.1002/bkcs.12218
日期:2021.3
A novel process for the synthesis of β‐sulfonated cyclopentanones via electrochemical oxidative radical arylsulfonylation and 1,2‐alkyl shift sequences of vinyl cyclobutanols was successfully developed. This approach represents a practical method for the preparation of β‐sulfonated cyclopentanones under environmentally benign reaction conditions.
Potassium iodide-mediated radical arylsulfonylation/1,2-carbon migration sequences for the synthesis of β-sulfonated cyclic ketones
作者:Yeon Joo Kim、Mi Hyeon Choo、Dae Young Kim
DOI:10.1016/j.tetlet.2018.09.027
日期:2018.10
Potassium iodide-mediated radical sulfonylation/1,2-carbon migration sequences of alkenylcyclobutanols has been developed. The reaction was effectively accelerated using potassium iodide as a catalyst under mild reaction conditions without other metal oxidant. This approach is environmentally benign by use of shelf-stable arylsulfonyl hydrazides as arylsulfonyl radical precursor and water as solvent
Electrochemical radical arylsulfonylation/semipinacol rearrangement sequences of alkenylcyclobutanols: Synthesis of β-sulfonated cyclic ketones
作者:Yeon Joo Kim、Dae Young Kim
DOI:10.1016/j.tetlet.2019.04.009
日期:2019.5
Electrochemical oxidative radical sulfonylation/semipinacolrearrangement sequences of alkenylcyclobutanols have been developed. The reaction proceeds in an undivided electrochemical cell equipped with platinum plate electrodes employing sodium iodide as a redox catalyst and a supporting electrolyte. This approach is environmentally benign by using shelf-stable arylsulfonyl hydrazides as arylsulfonyl
Visible Light Photoredox-Catalyzed Arylative Ring Expansion of 1-(1-Arylvinyl)cyclobutanol Derivatives
作者:Su Jin Kwon、Dae Young Kim
DOI:10.1021/acs.orglett.6b02201
日期:2016.9.16
A visiblelightmediatedphotocatalytic arylation/ring expansion of alkenylcyclobutanols has been developed. This approach provides a mild and operationally simple access to the synthesis of functionalized cyclic ketones from the coupling reaction of alkenylcyclobutanols with aryldiazonium salts.