Methods for the synthesis of donor-acceptor cyclopropanes

YV Tomilov, LG Menchikov, RA Novikov… - Russian Chemical …, 2018 - iopscience.iop.org
The interest in cyclopropane derivatives is caused by the facts that, first, the three-carbon
ring is present in quite a few natural and biologically active compounds and, second …

Ring‐Opening 1‐Amino‐3‐aminomethylation of Donor–Acceptor Cyclopropanes via 1, 3‐Diazepanes

LKB Garve, PG Jones, DB Werz - … Chemie International Edition, 2017 - Wiley Online Library
The first ring‐opening reaction of donor–acceptor cyclopropanes to give diamines is
reported. For this reaction, a 1, 3‐bisfunctionalization was developed using cyclopropanes …

Lewis acid catalyzed diastereoselective cycloaddition reactions of donor–acceptor cyclopropanes and vinyl azides: Synthesis of functionalized azidocyclopentane and …

R Dey, P Banerjee - Organic letters, 2017 - ACS Publications
Lewis acid catalyzed [3+ 2]-cycloaddition reaction of donor–acceptor cyclopropanes with
vinyl azides has been developed to obtain diastereomerically enriched azidocyclopentane …

Radical differentiation of two ester groups in unsymmetrical diazomalonates for highly asymmetric olefin cyclopropanation

J Wang, J Xie, WCC Lee, DS Wang, XP Zhang - Chem catalysis, 2022 - cell.com
Diazomalonates have been demonstrated as effective metalloradicophiles for asymmetric
radical olefin cyclopropanation via Co (II)-metalloradical catalysis (MRC). Supported by D 2 …

Ring Expansion of Donor–Acceptor Cyclopropane via Substituent Controlled Selective N-Transfer of Oxaziridine: Synthetic and Mechanistic Insights

A Ghosh, S Mandal, PK Chattaraj, P Banerjee - Organic letters, 2016 - ACS Publications
A distinctive N-substituent controlled electrophilic N-transfer of oxaziridines with donor–
acceptor cyclopropanes in the presence of MgI2 is reported. Contrary to earlier reports, the …

Lewis Acid-Catalyzed [3+ 3] Annulation of Donor–Acceptor Cyclopropanes and Indonyl Alcohols: One Step Synthesis of Substituted Carbazoles with Promising …

RK Varshnaya, P Banerjee - The Journal of Organic Chemistry, 2019 - ACS Publications
A highly efficient protocol to access carbazole from donor–acceptor cyclopropane and
indonyl alcohol via [3+ 3] annulation in the presence of a Lewis acid has been …

Lewis Acid Catalyzed Formal [3+ 2] Cycloaddition of Donor‐Acceptor Cyclopropanes and 1‐Azadienes: Synthesis of Imine Functionalized Cyclopentanes and …

K Verma, P Banerjee - Advanced Synthesis & Catalysis, 2017 - Wiley Online Library
Abstract Lewis acid catalyzed formal [3+ 2] cycloadditions of 1‐azadienes with donor
acceptor cyclopropanes to synthesize varieties of imine functionalized cyclopentanes and …

Synthesis of Indenopyridine Derivatives via MgI2‐Promoted [2+4] Cycloaddition Reaction of In‐situ Generated 2‐Styrylmalonate from Donor‐Acceptor …

K Verma, P Banerjee - Advanced Synthesis & Catalysis, 2018 - Wiley Online Library
Abstract An unexpected MgI2‐promoted [2+ 4] cycloaddition reaction of in‐situ generated 2‐
styrylmalonate from donor‐acceptor cyclopropanes with chalconimines to synthesize highly …

Exploitation of Cyclopropane Carbaldehydes to Prins Cyclization: Quick Access to (E)-Hexahydrooxonine and Octahydrocyclopenta[b]pyran

P Kumar, R Dey, P Banerjee - Organic letters, 2018 - ACS Publications
A single-step TiX4-mediated Prins-type cyclization of cyclopropane carbaldehydes with 3-
buten-1-ol for the highly stereoselective construction of relatively strained (E) …

Cascade intramolecular rearrangement/cycloaddition of nitrocyclopropane carboxylates with alkynes/alkenes: access to uncommon bi (hetero) cyclic systems

RK Varshnaya, P Singh, N Kaur… - Organic Chemistry …, 2021 - pubs.rsc.org
A straightforward approach for the one-pot synthesis of aziridinoisoxazoles via cascade
intramolecular rearrangement of nitrocyclopropane carboxylates to cyclic nitronates followed …