(3+3)-Annulation of Donor-Acceptor Cyclopropanes with Diaziridines
作者:Alexey O. Chagarovskiy、Vladimir S. Vasin、Vladimir V. Kuznetsov、Olga A. Ivanova、Victor B. Rybakov、Alexey N. Shumsky、Nina N. Makhova、Igor V. Trushkov
DOI:10.1002/anie.201805258
日期:2018.8.6
The first example of (3+3)‐annulation of two different three‐membered rings is reported herein. Donor‐acceptor cyclopropanes in reaction with diaziridines were found to afford perhydropyridazine derivatives in high yields and diastereoselectivity under mild Lewis acid catalysis. The disclosed reaction is applicable for the broad substrate scope and exhibits an excellent functional group tolerance.
Ring Opening of Donor–Acceptor Cyclopropanes with Cyanide Ion and Its Surrogates
作者:Maksim A. Boichenko、Ivan A. Andreev、Alexey O. Chagarovskiy、Irina I. Levina、Sergey S. Zhokhov、Igor V. Trushkov、Olga A. Ivanova
DOI:10.1021/acs.joc.9b03098
日期:2020.1.17
A straightforward method for ringopening of donor-acceptorcyclopropanes with trimethylsilyl cyanide as a surrogate of cyanide ion in the presence of B(C6F5)3 or trifluoromethanesulfonic acid as a catalyst has been developed. The methodology provides a short route to γ-cyanoesters that can be useful synthetic intermediates for the synthesis of diverse bioactive molecules such as glutaric and δ-aminovaleric
Synthesis of 1‐Substituted Pyrazolines by Reaction of Donor‐Acceptor Cyclopropanes with 1,5‐Diazabicyclo[3.1.0]hexanes
作者:Alexey O. Chagarovskiy、Vladimir V. Kuznetsov、Olga A. Ivanova、Alexander S. Goloveshkin、Irina I. Levina、Nina N. Makhova、Igor V. Trushkov
DOI:10.1002/ejoc.201900579
日期:2019.9
A simple and efficient methodology for the synthesis of 1‐alkyl‐2,3‐dihydropyrazoles and the corresponding tetrahydropyridazines has been proposed. In this process bicyclic diaziridines were used as synthetic equivalent of difficultly accessible unsubstituted 2,3‐dihydropyrazole and unstable unsubstituted tetrahydropyridazine.
A bioinspired route to indanes and cyclopentannulated hetarenes via (3+2)-cyclodimerization of donor–acceptor cyclopropanes
作者:Olga A. Ivanova、Ekaterina M. Budynina、Dmitriy A. Skvortsov、Michelle Limoge、Andrei V. Bakin、Alexey O. Chagarovskiy、Igor V. Trushkov、Mikhail Ya. Melnikov
DOI:10.1039/c3cc44475a
日期:——
1-diesters and related stepwise cross-reaction of two different cyclopropanes were developed. These processes provide efficient and highly stereoselective access to polyoxygenated indanes and cyclopentannulated heteroarene derivatives, which display significant cytotoxicity against several lines of cancer cells (IC50 of 10(-6)-10(-5) M) while being non-toxic for normal cells.
(3 + 3)-Cyclodimerization of Donor–Acceptor Cyclopropanes. Three Routes to Six-Membered Rings
作者:Olga A. Ivanova、Ekaterina M. Budynina、Alexey O. Chagarovskiy、Igor V. Trushkov、Mikhail Ya. Melnikov
DOI:10.1021/jo201612w
日期:2011.11.4
The ability of donor acceptor cyclopropanes to (3 + 3)-cyclodimerize is disclosed. It has been found that Lewis acid-induced transformations of 2-(hetero)arylcyclopropane-1,1-dicarboxylates containing electron-abundant aromatic substituents led to the construction of six-membered cyclic systems. Depending on the substrate properties and the Lewis acid applied, three types of products can be obtained: (1) 1,4-diarylcyclohexanes, (2) 1-aryl-1,2,3,4-tetrahydronaphthalenes, and (3) 9,10-dihydroanthracenes.