Transition metal-catalyzed selective carbon–carbon bond cleavage of vinylcyclopropanes in cycloaddition reactions

J Wang, SA Blaszczyk, X Li, W Tang - Chemical reviews, 2020 - ACS Publications
In this review, transition metal-catalyzed methodologies and applications that exploit C–C
bond cleavage of vinylcyclopropanes (VCPs) are summarized with a focus on cycloaddition …

N-Tosylhydrazones: versatile synthons in the construction of cyclic compounds

Y Xia, J Wang - Chemical Society Reviews, 2017 - pubs.rsc.org
N-Tosylhydrazones have recently emerged as useful synthons in a variety of transition-metal-
catalyzed and transition-metal-free reactions, which affords novel methodologies for the …

Natural product syntheses via carbonylative cyclizations

K Ma, BS Martin, X Yin, M Dai - Natural product reports, 2019 - pubs.rsc.org
Covering: 2000–2018 In this review, we highlight recent examples of natural product total
syntheses employing transition metal-mediated/catalyzed carbonylative cyclization …

Homogeneous photocatalytic reactions with organometallic and coordination compounds—Perspectives for sustainable chemistry

N Hoffmann - ChemSusChem, 2012 - Wiley Online Library
Since the time of Giacomo Ciamician at the beginning of the 20th century, photochemical
transformations have been recognized as contributing to sustainable chemistry. Electronic …

Regioselective one-step synthesis of pyrazoles from alkynes and N-tosylhydrazones:[3+ 2] dipolar cycloaddition/[1, 5] sigmatropic rearrangement cascade.

MC Pérez‐Aguilar, C Valdés - Angewandte Chemie, 2013 - search.ebscohost.com
The pyrazole is a very important heterocycle in pharmaceutical and agrochemical
industries.[1] Compounds containing the pyrazole substructure find application in a wide …

Luxury of N‐Tosylhydrazones in Transition‐Metal‐Free Transformations

D Arunprasath, B Devi Bala… - Advanced Synthesis & …, 2019 - Wiley Online Library
This review is focused on the recent developments in transition‐metal‐free transformations
using N‐tosylhydrazones, emerging building blocks in contemporary organic chemistry …

Regioselective synthesis of vinyl halides, vinyl sulfones, and alkynes: a tandem intermolecular nucleophilic and electrophilic vinylation of tosylhydrazones

DP Ojha, KR Prabhu - Organic letters, 2015 - ACS Publications
A diazo species is trapped in an intermolecular fashion by two independent ion species in
tandem at the carbene center to install an electrophile and a nucleophile on the same …

Olefination of carbonyl compounds through reductive coupling of alkenylboronic acids and tosylhydrazones

MC Pérez‐Aguilar, C Valdés - Angewandte Chemie International Edition, 2012 - infona.pl
The partners decide: The C C bond‐forming reductive cross‐coupling of alkenylboronic
acids and tosylhydrazones takes place under mild reaction conditions without the need of a …

Oxazaborolidinium ion-catalyzed cyclopropanation of α-substituted acroleins: enantioselective synthesis of cyclopropanes bearing two chiral quaternary centers

L Gao, GS Hwang, DH Ryu - Journal of the American Chemical …, 2011 - ACS Publications
A catalytic synthetic route to highly functionalized chiral cyclopropane derivatives was
developed by Michael-initiated cyclopropanation of α-substituted acroleins with aryl-and …

Cyclopropanation reactions of semi-stabilized and non-stabilized diazo compounds

EMD Allouche, AB Charette - Synthesis, 2019 - thieme-connect.com
The cyclopropane ring is present in a large number of bioactive molecules as its
incorporation often greatly alters their physiochemical properties. The synthesis of such motif …