Iron-Catalyzed Alkylazidation of 1,1-Disubstituted Alkenes with Diacylperoxides and TMSN<sub>3</sub>
作者:Rongbiao Wei、Haigen Xiong、Changqing Ye、Yajun Li、Hongli Bao
DOI:10.1021/acs.orglett.0c00969
日期:2020.4.17
An iron-catalyzed radical alkylazidation of electron-deficient alkenes is reported. Alkyl diacyl peroxides work as the alkyl source, and trimethylsilyl azide acts as the azido reservoir. This method features mild reaction conditions, wide substrate scope, and good functional group tolerance, providing a range of α-azido esters, an α-azido ketone, and an α-azido cyanide in high yields. These azides
S H2 reactions of diphenyl diselenide; preparation and reactions of bridgehead selenides
作者:M. John Perkins、Eric S. Turner
DOI:10.1039/c39810000139
日期:——
benzene when R is primary alkyl; with 1-adamantyl radicals this SH2 displacement affords a route to 1-adamantyl phenyl selenide which, on oxidation and pyrolysis of the resultant selenoxide, gives adamantan-1-ol; in contrast the selenoxide from bicyclo[3.3.1]nonan-1-yl phenyl selenide decomposes via bicyclo[3.3.1]non-l-ene.
对于S H 2过程,R·+ PhSeSePh→PhSeR + PhSe·,k = ca。当R为伯烷基时,在苯中80°C,5×10 7 mol –1 s –1;具有1-金刚烷基的该S H 2置换提供了通往1-金刚烷基苯基硒化物的途径,其在所得硒氧化物的氧化和热解后,产生了金刚烷-1-醇。与此相反,从双环的氧化硒[3.3.1]壬烷-1-基苯基硒化物分解经由二环[3.3.1]壬-1-烯。
Iron-Catalyzed Vinylic C−H Alkylation with Alkyl Peroxides
作者:Liang Ge、Wujun Jian、Huan Zhou、Shaowei Chen、Changqing Ye、Fei Yu、Bo Qian、Yajun Li、Hongli Bao
DOI:10.1002/asia.201800534
日期:2018.9.4
are readily accessible from carboxylic acids, are utilized as general primary, secondary, and tertiary alkylating reagents for iron‐catalyzed vinylic C−H alkylation of vinyl arenes, dienes, and 1,3‐enynes. This transformation affords olefinic products in up to 98 % yield with high E/Z values. A broad range of functionalities, including carboxyl, boronic acid, methoxy, ester, amino, and halides, are
Iminyls. Part 8. Intramolecular addition to nitrile groups
作者:Alexander R. Forrester、Hajima Irikawa、Ronald H. Thomson、Soo On Woo、Trevor J. King
DOI:10.1039/p19810001712
日期:——
Evidence for the radical polymerisation of nitrile groups in polyacrylonitrile has been sought using model compounds. No evidence for the cycloaddition of iminyls to nitrile groups has been obtained but nucleophilic addition occurred easily. Thus, 1,8-dicyanonaphthalene reacted with hydroxylamine to give naphthalimide dioxime and with butyl-lithium to give azaphenalene derivatives but adamantyl radicals
Iron‐Catalyzed Radical Decarboxylative Oxyalkylation of Terminal Alkynes with Alkyl Peroxides
作者:Xiaotao Zhu、Changqing Ye、Yajun Li、Hongli Bao
DOI:10.1002/chem.201701830
日期:2017.8
An iron‐catalyzed oxyalkylation of alkynes with alkyl peroxides as the alkylating reagents has been investigated. Alkyl peroxides are readily available from aliphatic acids and serve simultaneously as the alkylating reagents and internal oxidants. Primary, secondary, and tertiary alkyl groups of aliphatic acids were readily incorporated into C−C triple bonds and diverse α‐alkylated ketones were synthesized