Chemical upcycling of polyethylene, polypropylene, and mixtures to high-value surfactants

Z Xu, NE Munyaneza, Q Zhang, M Sun, C Posada… - Science, 2023 - science.org
Conversion of plastic wastes to fatty acids is an attractive means to supplement the sourcing
of these high-value, high-volume chemicals. We report a method for transforming …

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 …

Lewis Acid Triggered Vinylcyclopropane–Cyclopentene Rearrangement

OA Ivanova, AO Chagarovskiy… - The Journal of …, 2018 - ACS Publications
We report a mild Lewis acid induced isomerization of donor–acceptor cyclopropanes,
containing an alkenyl moiety and diverse electron-withdrawing group (s) at the adjacent …

cis-Selective, Enantiospecific Addition of Donor–Acceptor Cyclopropanes to Activated Alkenes: An Iodination/Michael-Cyclization Cascade

NL Ahlburg, PG Jones, DB Werz - Organic Letters, 2020 - ACS Publications
We present a versatile method for the enantiospecific, cis-diastereoselective intermolecular
and intramolecular cycloaddition of donor–acceptor cyclopropanes to electron-poor alkenes …

Three‐Component Gallium (III)‐Promoted Addition of Halide Anions and Acetylenes to Donor–Acceptor Cyclopropanes

RA Novikov, DD Borisov, AV Tarasova… - Angewandte …, 2018 - Wiley Online Library
A new strategy for the three‐component addition of halide anions and acetylenes to donor–
acceptor cyclopropanes (DACs) is presented. This reaction, which occurs with high E …

GaCl3-Mediated “Inverted” Formal [3 + 2]-Cycloaddition of Donor–Acceptor Cyclopropanes to Allylic Systems

MA Zotova, RA Novikov, EV Shulishov… - The Journal of Organic …, 2018 - ACS Publications
A new process of “inverted” formal [3+ 2]-cycloaddition of donor–acceptor cyclopropanes
(DACs) to allylic systems to give polyfunctionalized cyclopentanes has been developed …

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 …

Donor–acceptor cyclopropanes as ortho-quinone methide equivalents in formal (4+ 2)-cycloaddition to alkenes

KL Ivanov, SI Bezzubov, MY Melnikov… - Organic & Biomolecular …, 2018 - pubs.rsc.org
A new type of donor–acceptor cyclopropane reactivity towards alkenes was revealed for 2-
arylcyclopropane-1, 1-diesters that contain an OH-group in the ortho-position of the aryl …

Synthesis of Functionalized Five-Membered Heterocycles from Epoxides: A Hydrogen-Bond Donor Catalytic Approach

K Das, S Halder - The Journal of Organic Chemistry, 2022 - ACS Publications
The synthesis of highly functionalized five-membered oxa-and aza-heterocycles has been
reported utilizing hydrogen-bond donor (HBD) catalysis. In this method, an epoxide was …