Cyano-borrowing reaction: nickel-catalyzed direct conversion of cyanohydrins and aldehydes/ketones to β-cyano ketone
作者:Zhao-Feng Li、Qian Li、Li-Qing Ren、Qing-Hua Li、Yun-Gui Peng、Tang-Lin Liu
DOI:10.1039/c9sc00640k
日期:——
nickel-catalyzed, high atom- and step-economical reaction of cyanohydrins with aldehydes or ketones via an unprecedented “cyano-borrowing reaction” has been developed. Cleavage of the C–CN bond of cyanohydrins followed by aldol condensation and conjugate addition of cyanide to α,β-unsaturated ketones proceeded to deliver a range of racemic β-cyano ketones with good to high yields. The practical procedure
Preparation of 3,5-diarylsubstituted 5-hydroxy-1,5-dihydro-2<i>H</i>-pyrrol-2-ones <i>via</i> base-assisted cyclization of 3-cyanoketones
作者:Nicolai A. Aksenov、Dmitrii A. Aksenov、Igor A. Kurenkov、Alexander V. Aksenov、Anton A. Skomorokhov、Lidiya A. Prityko、Michael Rubin
DOI:10.1039/d1ra02279b
日期:——
A convenient preparative method is developed allowing for expeditious assembly of 3,5-diarylsubstituted 5-hydroxy-1,5-dihydro-2H-pyrrol-2-ones from routinely available inexpensive synthetic precursors. These compounds could not be prepared via the previously known protocols, as 2-aminofuran derivatives were produced instead.
One-Pot Synthesis of Polynuclear Indole Derivatives by Friedel–Crafts Alkylation of γ-Hydroxybutyrolactams
作者:Vladimir T. Abaev、Nicolai A. Aksenov、Dmitrii A. Aksenov、Elena V. Aleksandrova、Alesia S. Akulova、Igor A. Kurenkov、Alexander V. Leontiev、Alexander V. Aksenov
DOI:10.3390/molecules28073162
日期:——
The Friedel–Crafts reaction of novel 3,5-diarylsubstituted 5-hydroxy-1,5-dihydro-2H-pyrrol-2-ones was used for low cost, one-pot preparation of polycyclic indolederivatives structurally similar to Ergot alkaloids.