Visible light-mediated oxidative C(sp<sup>3</sup>)–H phosphonylation for α-aminophosphonates under oxidant-free conditions
作者:Linbin Niu、Shengchun Wang、Jiamei Liu、Hong Yi、Xing-An Liang、Tianyi Liu、Aiwen Lei
DOI:10.1039/c7cc09624k
日期:——
An external oxidant-free synthesis of α-aminophosphonates by synergistically combining photocatalysis and proton-reduction catalysis is developed herein.
Electrochemical oxidative [4 + 2] annulation of tertiary anilines and alkenes for the synthesis of tetrahydroquinolines
作者:Pengfei Huang、Pan Wang、Shengchun Wang、Shan Tang、Aiwen Lei
DOI:10.1039/c8gc02463d
日期:——
pharmaceutical and agrochemical industries. The oxidative [4 + 2] annulation reaction provides a powerful tool for the rapid construction of six-membered heterocycles. Herein, we report a metal- and external oxidant-free method for the uniform synthesis of tetrahydroquinolines through the electrochemical oxidative [4 + 2] annulation of tertiary anilines and alkenes. In this strategy, one partner loses only
Copper‐Phosphine Mediated Oxidative Phosphorylation of Aromatic Amines and P(OR)
<sub>3</sub>
under Aerobic Conditions
作者:Shihaozhi Wang、Shidi Ma、Jiale Yang、Wenshuang Li、Dianjun Li、Jinhui Yang
DOI:10.1002/ejoc.202100550
日期:2021.8.13
trialkyl phosphites under aerobic conditions. Importantly, this method could be applied not only to the synthesis of α-aminophosphonates (C−P bonds) but also to produce phosphoramides (N−P bonds). This strategy provided a convenient and efficient method for the synthesis of phosphorous compounds.
anodic oxidation proceeds either via phosphiniumradicalcations, which then attack the arenes electrophilically, or via arene radicalcations, which add the trialkylphosphite as nucleophile. Aryl phosphonates are also obtained in good yield by chemical oxidation with peroxodisulfate/AgNO3 in acetonitrile/water or glacial acetic acid. The diethylphosphinium radicalcation, formed from diethylphosphite by
Iron-catalyzed dehydrogenative phosphonation of N,N-dimethylanilines
作者:Wei Han、Armin R. Ofial
DOI:10.1039/b913313e
日期:——
Iron(II) and iron(III) salts catalyze the oxidative α-phosphonation of N,N-dimethylanilines with dialkyl H-phosphonates in the presence of tert-butylhydroperoxide.