Construction of medium-sized rings by gold catalysis

RL Reyes, T Iwai, M Sawamura - Chemical Reviews, 2020 - ACS Publications
Compounds having cyclic molecular frameworks are highly regarded for their abundance
and diverse utilities. In particular, medium-sized carbocycles and heterocycles exist in a …

A happy medium: the synthesis of medicinally important medium-sized rings via ring expansion

AK Clarke, WP Unsworth - Chemical Science, 2020 - pubs.rsc.org
Medium-sized rings have much promise in medicinal chemistry, but are difficult to make
using direct cyclisation methods. In this minireview, we highlight the value of ring expansion …

Phosphoranyl radical fragmentation reactions driven by photoredox catalysis

JA Rossi-Ashton, AK Clarke, WP Unsworth… - ACS …, 2020 - ACS Publications
Photocatalytic generation of phosphoranyl radicals is fast emerging as an essential method
for the generation of diverse and valuable radicals, typically via deoxygenation or …

Recent advances of Pd-π-allyl zwitterions in cycloaddition reactions

J Du, YF Li, CH Ding - Chinese Chemical Letters, 2023 - Elsevier
Palladium-catalyzed cycloaddition reactions via Pd-π-allyl zwitterions have been
established as significant synthetic transformations to enable numerous carbon-or …

A modular strategy for the synthesis of macrocycles and medium-sized rings via cyclization/ring expansion cascade reactions

I Zalessky, JM Wootton, JKF Tam… - Journal of the …, 2024 - ACS Publications
Macrocycles and medium-sized rings are important in many scientific fields and
technologies but are hard to make using current methods, especially on a large scale …

Ruthenium-Catalyzed Carbonylation of α-Aminoaryl-Tethered Alkylidenecyclopropanes: Synthesis of Eight-Membered Benzolactams

MM Ji, PR Liu, JD Yan, YY He, H Li, AJ Ma… - Organic …, 2024 - ACS Publications
The synthesis of medium-sized lactams is a great challenge because of the unfavorable
transannular interactions and entropic barriers in the transition state. We have developed a …

Catalyst-free, direct electrochemical synthesis of annulated medium-sized lactams through C–C bond cleavage

Z Xu, Z Huang, Y Li, R Kuniyil, C Zhang… - Green …, 2020 - pubs.rsc.org
A catalyst-free, direct electrochemical synthesis of synthetically challenging medium-sized
lactams through C–C bond cleavage has been developed. In contrast to previous typical …

Counterion-mediated enantioconvergent synthesis of axially chiral medium rings

JY Du, T Balan, TDW Claridge… - Journal of the American …, 2022 - ACS Publications
There are few enantioconvergent reactions in which racemic substrates bearing multiple
stereochemical features are converted into products with high levels of diastereo-and …

Steric-switched defluorofunctionalization selectivity: controlled synthesis of monofluoroalkene-masked medium-sized heterocyclic lactams and lactones

H Zeng, H Li, H Jiang, C Zhu - Science China Chemistry, 2022 - Springer
The steric-switched ipso-defluoroamination-triggered and ipso-defluorooxylation-triggered
cyclization of (trifluoromethyl) alkenes with amino alcohols and diamines are achieved …

Rhodium-Catalyzed Asymmetric (3 + 2 + 2) Annulation via N–H/C–H Dual Activation and Internal Alkyne Insertion toward N-Fused 5/7 Bicycles

C Yang, L Shi, F Wang, Y Su, JB Xia, F Li - ACS Catalysis, 2022 - ACS Publications
N-Fused 5/7-membered bicycles have witnessed apparent importance in many bioactive
molecules, but there are rare examples to construct these privileged scaffolds by asymmetric …