Results 111 to 120 of about 19,882 (280)
European Journal of Organic Chemistry, EarlyView.The reaction of 2‐hydroxycyclobutanone with a Wittig reagent bearing a benzooxazolone moiety results in the formation of a cyclobutane‐fused bicyclic γ‐lactone with the heterocyclic unit located at the bridgehead position. The proposed mechanism involves the transfer of the acyl ylide fragment and an intramolecular Wittig reaction to provide an ...
Stefano Barranco +6 more
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Nickel(II)-Catalyzed Formal [3+2] Cycloadditions between Indoles and Donor–Acceptor Cyclopropanes
MoleculesThis article describes the development of a nickel-catalyzed regio- and diastereoselective formal [3+2] cycloaddition between N-substituted indoles and donor–acceptor cyclopropanes to synthesize cyclopenta[b]indoles. Optimized reaction conditions provide
Víctor Quezada +9 more
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Studies on Cyclopropanes. II. Preparation and Properties of Some Penta- and Tetrasubstituted Cyclopropanes. [PDF]
, 1957 Gunnel Westöö, Eleanor Lichtler
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Photoredox Decarboxylative 3‐Fluoroallylation of α‐Amino Acids
European Journal of Organic Chemistry, Accepted Article.The photocatalytic decarboxylation of α‐amino acids is an effective route to α‐aminoalkyl radicals which is also amenable to the derivatization of peptides through selective C–C bond formation at the C‐terminus. We report that, in the presence of an iridium photocatalyst, allylic difluorides are suitable radical traps to capture α‐aminoalkyl radicals ...
Taylor Semeniuk +5 more
wiley +1 more source
OPTICALLY ACTIVE CHRYSANTHEMIC ACID AND ITS ANALOGUES [PDF]
Chemistry Journal of Moldova: General, Industrial and Ecological Chemistry, 2010 Optically active chrysanthemic acid and its analogues have received considerable attention in recent years due to their practical importance. This review will focus on describing the developments in the synthesis of optically active chrysanthemic acid ...
L. Bets +5 more
doaj
Synergistic catalysis: cis-cyclopropanation of benzoxazoles
, 2016 In the present paper we report our latest efforts in pushing the boundaries of Synergistic Catalysis. We propose the use of 3 different catalytic cycles working in concert for the formation of cis cyclopropane derivatives of benzoxazoles with excellent ...
Light, Mark +3 more
core +1 more source
CIRCULATORY EFFECTS OF RAISED AIRWAY PRESSURE DURING CYCLOPROPANE ANESTHESIA IN MAN 1 [PDF]
, 1951 Henry L. Price +4 more
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Helvetica Chimica Acta, EarlyView.Abstract A detailed picture of the reactivity of metallacyclobutanes is key to the understanding and development of new reactions relying on these reactive intermediates, including olefin metathesis and cyclopropanation. More than 40 years ago, Miyashita and Grubbs reported experimental studies on the thermal decomposition pathways of a phosphine ...
Olaf L. Kooijman, Marc‐Etienne Moret
wiley +1 more source
Convenient Synthesis of Functionalized Cyclopropa[c]coumarin-1a-carboxylates
Molecules, 2018 A simple method has been developed for the synthesis of cyclopropa[c]coumarins, which belong to the donor-acceptor cyclopropane family and, therefore, are promising substrates for the preparation of chromene-based fine chemicals. The method, based on the
Olga A. Ivanova +5 more
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POSTANESTHETIC HYPOTENSION FOLLOWING CYCLOPROPANE [PDF]
, 1953 Joseph J. Buckley +5 more
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