Results 31 to 40 of about 21,746 (290)
Beilstein Journal of Organic Chemistry, 2020 Ferrocenyl thioketones reacted with donor–acceptor cyclopropanes in dichloromethane at room temperature in the presence of catalytic amounts of Sc(OTf)3 yielding tetrahydrothiophene derivatives, products of formal [3 + 2]-cycloaddition reactions, in ...
Grzegorz Mlostoń +4 more
doaj +1 more source
A valuable upgrade to the portfolio of cycloaddition reactions [PDF]
, 2016 The author thanks EaStCHEM for financial support.Recently Antonchick and Manna described a unique annulation that knits together three acetophenones to construct cyclopropanes. The cascade is mediated by organo-copper and free radical species and amounts
Walton, John C.
core +1 more source
Angewandte Chemie, EarlyView.Database mining using principal component analysis (PCA)‐based clustering enabled discovery of bacterial enzymes capable of catalyzing stereodivergent cyclopropanation of styrene. Statistical analyses of sequence data further revealed characteristic structural properties of these enzymes, highlighting the potential of the bioinformatics tools for ...
Shunsuke Kato +5 more
wiley +2 more sources
Synthesis and Applications of Rhodacyclopentanones Derived From C-C Bond Activation [PDF]
, 2016 Rhodacyclopentanones, an “sp(3)-rich” class of metallacycle, underpin an emerging range of catalytic methodologies for the direct generation of complex scaffolds.
Bower, John, Shaw, Megan H
core +2 more sources
Asymmetric Titanium-Catalyzed Cyclopropanation of Nitriles with Grignard Reagents
SynOpen, 2018 The titanium-catalyzed asymmetric cyclopropanation of cyanoesters with Grignard reagents was investigated for the first time. Particularly, the study of the efficiency of Taddol-based titanium complexes has shown that the prior preparation of Taddol ...
Julien Caillé +4 more
doaj +1 more source
Synthesis of cyclopropanes via organoiron methodology: stereoselective preparation of cis-2-(2’-carboxycyclopropyl)glycine [PDF]
, 2002 A stereoselective route to cis-2-(2′-carboxycyclopropyl)glycine has been developed. exo-Nucleophilic addition to the (bicyclo[5.1.0]octadienyl)iron(1+) cation establishes the relative stereochemistry at the cyclopropane ring and the α-stereocenter ...
Donaldson, William, Wallock, Nathaniel J
core +2 more sources
Spectral Data for Synthesis of Cyclopropanes via Organoiron Methodology: Stereoselective Preparation of Bi(cyclopropyl)s [PDF]
, 2007 Spectral data created in the course of the research project. Supports specific findings in Synthesis of Cyclopropanes via Organoiron Methodology: Stereoselective Preparation of Bi(cyclopropyl)s .
Chatterjee +27 more
core +2 more sources
Capture–Collapse Heterocyclization:1,3-Diazepanes by C–N Reductive Elimination from Rhodacyclopentanones [PDF]
, 2016 Rhodacyclopentanones derived from carbonylative C–C activation of cyclopropyl ureas can be “captured” by pendant nucleophiles prior to “collapse” to 1,3-diazepanes.
Bower, John +2 more
core +18 more sources
Beilstein Journal of Organic Chemistry, 2013 A range of metathesis substrates was assembled from triplets of unsaturated building blocks. The approach involved the iterative attachment of a propagating and a terminating building block to a fluorous-tagged initiating building block.
Sushil K. Maurya +3 more
doaj +1 more source
The Synthesis of Functionalized Dimethylphosphinoyl Cyclopropanes and Cyclobutanes
Журнал органічної та фармацевтичної хімії, 2023 A simple preparative approach to a series of functionalized dimethylphosphinoyl-containing cyclopropanes and cyclobutanes has been developed; it is based on cyclocondensation of dimethylphosphinoyl acetonitrile with 1,2- and 1,3-dibromoalkanes. Synthetic
Anastasiia M. Aleksandrova +2 more
doaj +1 more source