Results 61 to 70 of about 1,875 (207)
A New Valuable Synthesis of Polyfunctionalized Furans Starting from β-Nitroenones and Active Methylene Compounds [PDF]
, 2019 Highly functionalized furans are the key scaffolds of many pharmaceuticals and bioactive natural products. Herein, we disclose a new fruitful synthesis of polyfunctionalized furans starting from beta-nitroenones and alpha-functionalized ketones.
Serena Gabrielli +7 more
core +1 more source
Fujiwara-Moritani reaction: challenges and new opportunities
Tetrahedron ChemFujiwara-Moritani reaction has proven to be robust for the efficient construction of polyfunctionalized olefins and cyclic skeletons. Recent advances toward greener systems, compatibility with strongly coordinating heterocycle substrates and sterically ...
Xiaojian Chen +5 more
doaj +1 more source
Highly diastereoselective access to polyfunctionalized 1,3-oxazines promoted by Brønsted/Lewis acids
, 2018 The Brønsted/Lewis acid catalyzed reaction of α-alkyloxyamides tethered to α,β-unsaturated ketones (aldehydes) afforded exclusively polyfunctionalized 1,3-oxazines with high diastereoselectivities and in high yields.
Clovis Peter +2 more
core +1 more source
New Piperazine Derivatives Synthesized from Thio-Substituted Polyhalogeno-2-nitro-1,3-butadienes
E-Journal of Chemistry, 2010 It is known that polyhalogeno-nitro-1,3-butadienes are important starting materials for the synthesis of polyfunctionalized bioactive heterocycles.
S. Goksin Aydinli, Cemil Ibis
doaj +1 more source
Beilstein Journal of Organic Chemistry, 2020 β-Nitrostyrenes underwent a Diels–Alder reaction with Danishefsky’s diene to afford cyclohexenes together with the corresponding hydrolyzed products, 3-arylated-5-methoxy-4-nitrocyclohexanones.
Haruyasu Asahara +2 more
doaj +1 more source
POLYFUNCTIONALITY OF THE TERM IN MODERN TERMINOLOGY
MESSENGER of Kyiv National Linguistic University. Series Philology, 2022 In the present paper, we characterize a term as a multifunctional phenomenon and define the system of its functions that is quite complicated, and even more complex than the corresponding system of a non-term (commonly used word). For instance, any term performs the sign function.
openaire +2 more sources
Macromolecular Materials and Engineering, Volume 311, Issue 8, August 2026.Partially bio‐based epoxy networks combine diglycidyl ether of bisphenol A with innovative eugenol‐derived amines to create tunable thermosets. By adjusting hardener ratios, the material architecture is precisely controlled. Thermomechanical behavior, together with molecular dynamics revealed by solid‐state 1H NMR, uncover direct links between cross ...
Stephanie Chedid +4 more
wiley +1 more source
Selective Synthesis of Polyfunctionalized Pyrido[2,3‑b]indoles by Multicomponent Domino Reactions
, 2016 A series of novel polyfunctionalized pyrido[2,3-b]indoles were synthesized by three- or four-component domino reactions under microwave irradiation. This protocol has the advantages of readily available starting materials, short reaction times, high ...
Da-Qing Shi (1528189) +5 more
core +2 more sources
Recent Advances in Benzannulation Approaches to Aromatic Frameworks
Chemistry – An Asian Journal, Volume 21, Issue 13, 14 July 2026.This review summarizes benzannulation strategies reported over the past 5 years, highlighting recent advances that enable efficient access to structurally diverse and highly substituted arenes through both transition‐metal‐catalyzed and metal‐free approaches.
Heeeun Kim, Yonghoon Kwon
wiley +1 more source
, 2008 Polyfunctionalized pyrrole 6 is synthesized in the ring transformation of N-hydroxy-3,5-dinitro4-pyridone 4 with enolate 2 derived from diethyl 3-oxogulutarate. The present reaction proceeds with C-N transfer from 4 to 2, which is hitherto unknown manner
NISHIWAKI, Nagatoshi +6 more
core +1 more source