Cycloaddition reactions of enoldiazo compounds

QQ Cheng, Y Deng, M Lankelma… - Chemical Society Reviews, 2017 - pubs.rsc.org
Enoldiazo esters and amides have proven to be versatile reagents for cycloaddition
reactions that allow highly efficient construction of various carbocycles and heterocycles …

The [3+ 3]-cycloaddition alternative for heterocycle syntheses: catalytically generated metalloenolcarbenes as dipolar adducts

X Xu, MP Doyle - Accounts of Chemical Research, 2014 - ACS Publications
Conspectus The combination of two or more unsaturated structural units to form cyclic
organic compounds is commonly referred to as cycloaddition, and the combination of two …

[HTML][HTML] 1, 3-Dipolar cycloadditions of azomethine imines

C Nájera, JM Sansano, M Yus - Organic & Biomolecular Chemistry, 2015 - pubs.rsc.org
Azomethine imines are considered 1, 3-dipoles of the aza-allyl type which are transient
intermediates and should be generated in situ but can also be stable and isolable …

Asymmetric intramolecular dearomatization of nonactivated arenes with ynamides for rapid assembly of fused ring system under silver catalysis

T Ito, S Harada, H Homma, H Takenaka… - Journal of the …, 2020 - ACS Publications
Arene dearomatization is a straightforward method for converting an aromatic feedstock into
functionalized carbocycles. Enantioselective dearomatizations of chemically inert arenes …

Multicomponent [5+ 2] cycloaddition reaction for the synthesis of 1, 4-diazepines: isolation and reactivity of azomethine ylides

DJ Lee, HS Han, J Shin, EJ Yoo - Journal of the American …, 2014 - ACS Publications
Air-stable azomethine ylides with an unusual pattern of charge distribution were efficiently
prepared via the rhodium-catalyzed reaction between pyridines and 1-sulfonyl-1, 2, 3 …

Switchable selectivity in an NHC-catalysed dearomatizing annulation reaction

C Guo, M Fleige, D Janssen-Müller, CG Daniliuc… - Nature Chemistry, 2015 - nature.com
The development of general catalytic methods for the regio-and stereoselective construction
of chiral N-heterocycles in a diversity-oriented fashion remains a formidable challenge in …

Phosphine-catalyzed highly enantioselective [3+ 3] cycloaddition of Morita–Baylis–Hillman carbonates with C, N-cyclic azomethine imines

L Zhang, H Liu, G Qiao, Z Hou, Y Liu… - Journal of the …, 2015 - ACS Publications
The first phosphine-catalyzed highly enantioselective [3+ 3] cycloaddition of Morita–Baylis–
Hillman carbonates with C, N-cyclic azomethine imines is described. Using a spirocyclic …

Gold‐catalyzed formal [4+ 1]/[4+ 3] cycloadditions of diazo esters with triazines

C Zhu, G Xu, J Sun - Angewandte Chemie International Edition, 2016 - Wiley Online Library
Reported herein is the unprecedented gold‐catalyzed formal [4+ 1]/[4+ 3] cycloadditions of
diazo esters with hexahydro‐1, 3, 4‐triazines, thus providing five‐and seven‐membered …

Chemoselective asymmetric intramolecular dearomatization of phenols with α-diazoacetamides catalyzed by silver phosphate

H Nakayama, S Harada, M Kono… - Journal of the American …, 2017 - ACS Publications
We report asymmetric dearomatization of phenols using Ag carbenoids from α-
diazoacetamides. The Ag catalyst promoted intramolecular dearomatization of phenols …

[HTML][HTML] Nucleophilic dearomatization of activated pyridines

G Bertuzzi, L Bernardi, M Fochi - Catalysts, 2018 - mdpi.com
Amongst nitrogen heterocycles of different ring sizes and oxidation statuses,
dihydropyridines (DHP) occupy a prominent role due to their synthetic versatility and …