Michael addition to 3-(2-nitrovinyl)indoles – route toward aliphatic nitro compounds with heterocyclic substituents
作者:Nicolai A. Aksenov、Anton A. Skomorokhov、Alexander V. Aksenov、Leonid G. Voskressensky、Michael A. Rubin
DOI:10.1007/s10593-019-02493-7
日期:2019.6
Synthetic approach toward indole derivatives bearing 2-nitroethyl group and polar azole moiety has been developed. This method involves conjugate addition of 1,3-dicarbonyl compounds to 3-(2-nitrovinyl)-1H-indoles followed by cyclocondensation with hydrazine or hydroxylamine to furnish pyrazole or isoxazole ring. Application of microwave activation allows to obtain the target indole derivatives in
Improved Method for Preparation of 3-(1H-Indol-3-yl)benzofuran-2(3H)-ones
作者:Igor Yu. Grishin、Nikolai A. Arutiunov、Dmitrii A. Aksenov、Nicolai A. Aksenov、Alexander V. Aksenov、Amina Z. Gasanova、Elena A. Sorokina、Carolyn Lower、Michael Rubin
DOI:10.3390/molecules27061902
日期:——
3-(1H-Indol-3-yl)benzofuran-2(3H)-ones were efficiently accessed via polyphosphoric acid-mediated condensation of 3-(2-nitrovinyl)-1H-indoles with phenols.
3-(1 H -Indol-3-yl)benzofuran-2(3 H )-ones 通过多磷酸介导的 3-(2-nitrovinyl)-1 H-吲哚与酚类的缩合有效地获得。