Cobalt-Catalyzed Reductive Carboxylation of α,β-Unsaturated Compounds with Carbon Dioxide
作者:Chika Hayashi、Takuo Hayashi、Tohru Yamada
DOI:10.1246/bcsj.20150043
日期:2015.6.15
The gaseous carbon dioxide incorporation reaction with α,β-unsaturated compounds was examined in the presence of a catalytic amount of bis(acetylacetonato)cobalt(II) and using diethylzinc as a redu...
在催化量的双(乙酰丙酮)钴 (II) 存在下,并使用二乙基锌作为还原剂,研究了气态二氧化碳与 α,β-不饱和化合物的掺入反应。
Visible-Light Induced Trifluoromethylation of <i>N</i>-Arylcinnamamides for the Synthesis of CF<sub>3</sub>-Containing 3,4-Disubstituted Dihydroquinolinones and 1-Azaspiro[4.5]decanes
of N-arylcinnamamides with Togni’s reagent has been explored. This method allows for an efficient and practical synthesis of a variety of CF3-containing dihydroquinolin-2(1H)-ones and 1-azasporo[4.5]decanes bearing various functional groups under mild conditions.
Metal-Free Synthesis of 3,3-Disubstituted Oxoindoles by Iodine(III)-Catalyzed Bromocarbocyclizations
作者:David C. Fabry、Maciej Stodulski、Stefanie Hoerner、Tanja Gulder
DOI:10.1002/chem.201201232
日期:2012.8.27
“I” did it: An iodine(III)‐mediated bromocarbocyclization was elaborated as an efficient tool for the synthesis of oxoindoles. This method is applicable to a variety of structurally different substrates, also with chemically sensitive groups, and gives access to the heterocycles in a regio‐ and stereoselective fashion (see scheme). The indole‐2‐ones obtained can be converted easily into structurally
In the presence of a catalytic amount of bis(1,3-diketonato)oxovanadium(IV) complex, epoxidation of α,β-unsaturated carboxamides with molecular oxygen and an aldehyde proceeds smoothly at room temperature to give the corresponding 2,3-epoxycarboxamides in good yields.