Selective Alkenylation and Hydroalkenylation of Enol Phosphates through Direct CH Functionalization
作者:Xu‐Hong Hu、Xiao‐Fei Yang、Teck‐Peng Loh
DOI:10.1002/anie.201506437
日期:2015.12.14
Rh‐catalyzed direct CH functionalization reaction of enol phosphates was developed. The method is applicable to a variety of coupling partners, including activatedalkenes, alkynes, and allenes, and leads to the formation of various valuable alkenylated and hydroalkenylated enol phosphates through the action of the phosphate directing group. The versatility and utility of the coupling products were demonstrated
Disclosed is a practical method for efficiently producing an alcohol compound by hydrogenating an aldehyde by using a homogeneous copper catalyst which is an easily-available low-cost metal species. Specifically disclosed is a method for producing an alcohol compound, which is characterized in that a hydrogenation reaction of an aldehyde compound is performed in the presence of a homogeneous copper catalyst, a monophosphine compound and an alcohol selected from the group consisting of primary alcohols, secondary alcohols and mixtures of those.
1,4-Diazabicyclo[2.2.2]octane-Promoted Aminotrifluoromethylthiolation of α,β-Unsaturated Carbonyl Compounds: <i>N-</i>Trifluoromethylthio-4-nitrophthalimide Acts as Both the Nitrogen and SCF<sub>3</sub> Sources
作者:Qing Xiao、Qijie He、Juncheng Li、Jun Wang
DOI:10.1021/acs.orglett.5b03116
日期:2015.12.18
A novel difunctionalization reaction is described. It uses N-trifluoromethylthio-4-nitrophthalimide as the reagent, which serves as both the nitrogen and SCF3 sources. In the presence of DABCO (1,4-diazabicyclo[2.2.2]octane), the nitrogen and SCF3 groups can be incorporated into α,β-unsaturated carbonylcompounds easily and give versatile β-amino ketones and esters in good yields. This difunctionalization
A Short and Enantiospecific Synthesis of (-)-Nupharamine
作者:Siegfried Blechert、Julian Gebauer
DOI:10.1055/s-2005-918942
日期:——
A short and convergent synthesis of the naturally occurring sesquiterpenoid piperidine alkaloid (-)-nupharamine is presented starting from (-)-isopinocampheol via cross metathesis and reductive animation as the key steps.