Results 41 to 50 of about 2,760 (139)
ChemCatChem, Volume 18, Issue 11, 15 June 2026.This review surveys the emerging role of copper(I) catalysis in sustainable synthesis, highlighting its exceptional capacity for monoelectronic processes. By examining the strategies based on electron, halogen, and hydrogen transfer processes (SET, XAT, and HAT, respectively), we outline key reactivity trends, design principles, and the synthetic ...
Antonio Torres‐Calis +1 more
wiley +1 more source
Total Synthesis of Roseophilin [PDF]
, 1998 The first total synthesis of the antitumor agent roseophilin 1 is reported. Its intricate macrotricyclic core 2 is obtained by means of a new palladium-catalyzed manifold for the formation of ansa-bridged pyrroles which proceeds via vinyl oxirane 8 and ...
Fürstner, A., Weintritt, H.
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ChemistryEurope, Volume 4, Issue 6, June 2026.Selective E/Z isomerization of diaryl methoximes is achieved by the careful selection of a photosensitizer despite the small triplet‐energy differences between structurally and electronically similar E and Z isomers. The isomer‐enriched diaryl methoximes undergo site‐selective C(sp2)–H functionalization to furnish densely functionalized products ...
Yuki Hirata +4 more
wiley +1 more source
THE TOTAL SYNTHESIS OF (+,-)-MORPHINE (PHENANTHROFURAN) [PDF]
, 1986 The total synthesis of racemic morphine is reported. The synthetic strategy is based on the tandem addition of an in situ generated aryl lithium to the terminus of a (beta)-substituted vinyl sulfone followed by intramolecular alkylation of the resulting (
TOTH, JOHN ELDON
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Penam Sulfone계 화합물 합성 및 구조-활성 연구 [PDF]
, 1997 본 실험에서는 β-lactamase 저해 효과가 있을 것으로 예상되는 1,1-dioxo-6-(substituted) penicillanic acid 유도체를 합성하여 β-lactamase 저해 효과를 측정하였다. 이러한 화합물들은 효소 활성부위의 serine-OH와 acyl-enzyme 중간체를 형성하여 효소를 불활성화시키므로, β-lactam 고리의 6-exomethylene 위치에 도입되는 치환기의 conjugation 수를 늘린 cinnamyl계
金炫辰
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Design and investigation of block copolymers for dispersion of carbon nanotubes in polymer matrices [PDF]
, 2018 Single-walled carbon nanotubes (SWNTs) are promising nanofillers for synthesizing lightweight, strong polymeric nanocomposites because of their large aspect ratios, low densities, and exceptional mechanical, electrical, and thermal properties.
Liu, Chengyin
core +1 more source
Síntese de compostos re-sensibilizadores de bactérias resistentes a antibióticos [PDF]
, 2006 Tese (doutorado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas. Programa de Pós-Graduação em QuímicaO presente trabalho apresenta a síntese de uma série de depsipeptídeos derivados de alanina e lactato como modelos ...
Sá, Marcus Cesar Mandolesi
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Studies of reductive lithiation methods for the preparation of organolithium compounds and applications of the palladium catalyzed zinc-ene cyclization [PDF]
, 2007 There are two major methods of performing radical-anion induced reductive lithiations that result in the cleavage of carbon-heteroatom bonds to produce organolithium compounds.
Yang, Ao
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A chemical and thermochemical study of non-observed symmetry allowed reactions [PDF]
, 1981 A variety of reactions, whilst predicted to be symmetry allowed, are not observed experimentally. Several such non-observed yet allowed reactions have been studied in order to understand them and to possibly bring about, with suitably modified substrates,
Ramachandran, P. V. +4 more
core +1 more source
Α-keto amides as precursors to heterocycles—generation and cycloaddition reactions of piperazin-5-one nitrones [PDF]
, 2018 alpha-Keto amides 10a,b, formed from reaction of pyruvic or benzoylformic acid with allyl amine are found to present as single rotameric forms whilst their tertiary amido analogues 10c,d present as two rotamers in solution at rt.
Fenlon, Julie +3 more
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