Synthesis of CF2H-containing oxindoles via photoredox-catalyzed radical difluoromethylation and cyclization of N-arylacrylamides
作者:Mei Zhu、Qingqing You、Rongxia Li
DOI:10.1016/j.jfluchem.2019.109391
日期:2019.12
difluoromethylation/cyclization of N-aryl acrylamides using difluoromethyl benzo[d]-thiazol-2-yl sulfone as the difluoromethylating reagent has been developed under mild conditions. This approach allows the synthesis a variety of useful CF2H-containing oxindoles in good to excellent yields. In addition, the photocatalytic difluoromethylation of methacryloyl benzamides and ortho-cyanoarylacrylamides via a similar
Metal-Free Cascade Methylation/Cyclization of N-Alkyl-N-methacryloylbenzamides with Dicumyl Peroxide
作者:Yan-Ning Niu、Xiao-Feng Xia、Yuan Yuan
DOI:10.1055/s-0036-1591522
日期:2018.3
A metal-free radical cascade methylation/cyclization of a wide range of N -alkyl- N -methacryloylbenzamides by using dicumylperoxide as the methylating reagent provides a convenient access to a series of methylated isoquinoline-1,3-diones in moderate yields.
Electrochemical trifluoromethylation/cyclization for the synthesis of isoquinoline-1,3-diones and oxindoles
作者:Yuanqiang Guo、Ruiguo Wang、Hongjian Song、Yuxiu Liu、Qingmin Wang
DOI:10.1039/d1cc03389a
日期:——
reduction to generate trifluoromethyl radicals. The trifluoromethylation reagent (IMDN-SO2CF3) used in this strategy is inexpensive and easy to obtain, and the reaction can be conducted efficiently without the addition of additional redox reagents. Using this strategy, we achieved electrochemical trifluoromethylation/cyclization for the synthesis of isoquinoline-1,3-diones and oxindoles. This protocol
Cascade alkylarylation of substituted <i>N</i>-allylbenzamides for the construction of dihydroisoquinolin-1(2<i>H</i>)-ones and isoquinoline-1,3(2<i>H</i>,4<i>H</i>)-diones
作者:Ping Qian、Bingnan Du、Wei Jiao、Haibo Mei、Jianlin Han、Yi Pan
DOI:10.3762/bjoc.12.32
日期:——
An oxidative reaction for the synthesis of 4-alkyl-substituted dihydroisoquinolin-1(2H)-ones with N-allylbenzamide derivatives as starting materials has been developed. The radical alkylarylation reaction proceeds through a sequence of alkylation and intramolecular cyclization. The substituent on the C-C double bond was found to play a key role for the progress of the reaction to give the expected