Results 71 to 80 of about 2,257 (201)
, 2016 Crystals of a disecondary squaramide covalently linked to a crown ether presents a great variety of inter- and intramolecular nonbonded interactions including C−H/π contacts, C−H···O and N−H···O hydrogen bonds, and π−π stacking between squaramide rings ...
Jeroni Morey (2453437) +6 more
core +2 more sources
Advanced Synthesis &Catalysis, Volume 368, Issue 15, 1 August 2026.An enantioselective Mannich reaction using barbituric acids as nucleophiles provides access to chiral heterocycles bearing quaternary stereocenters. The transformation is catalyzed by a bifunctional thiourea with high selectivity. An immobilized catalyst enables recycling and application under continuous‐flow conditions, offering an efficient and ...
Rodrigo Sánchez‐Molpeceres +4 more
wiley +1 more source
[eng] New magnetic hybrid nanoparticles of Fe3O4 coated with organosulfur-squaramide compounds are prepared. The modified-nanoparticles show a good coordination for Ag+ and Hg2+ cations in water, and present a high affinity for Au3+ ions.
Morey, Jeroni +6 more
core +1 more source
How Anthracene–Squaramide Conjugated Compounds Recognize Chloride, Bromide and Nitrate Anions?
, 2019 The chloride anion is better recognized than bromide and nitrate anions regarding to anthracene–squaramide conjugated compounds. The capability of the squaramide derivate structures to recognize the Cl–, Br– and NO3– anions increases from hydrogen atoms ...
da Silva, Vanessa Borges
core +1 more source
Polymerisable squaramide receptors for anion binding and sensing [PDF]
, 2014 A novel series of polymerisable squaramides has been synthesised in high yields using simple chemical reactions, and evaluated in the binding of anionic species.
Bollen, B. +2 more
core +1 more source
Squaramide catalyzed α-chiral amine synthesis
Tetrahedron Letters, 2018 Abstract Enantiomerically pure α-chiral amines, have been commonly utilized as resolving agents and chiral auxiliaries and are currently found in 40% of active pharmaceutical ingredients. Hence, development of highly stereoselective metal-free protocols regarding atom-economy and large-scale applications becomes a major issue. In this respect, chiral
Seda Karahan, Cihangir Tanyeli
openaire +2 more sources
Mechanochemistry as an Emerging Tool for Organofluorine Chemistry
Chemistry–Methods, Volume 6, Issue 8, August 2026.Fluorinated scaffolds are central across many areas of chemistry, driving the demand for efficient and sustainable synthetic methods. Mechanochemistry has emerged as a powerful alternative to conventional approaches, offering reduced environmental impact, shorter reaction times, and unique reactivity and selectivity.
Marie Caldiero +3 more
wiley +1 more source
Self-assembly of Liquid-crystalline Squaramides [PDF]
Chemistry Letters, 2018 Novel liquid-crystalline N,N′-diarylsquaramides 1a and 1b were designed and synthesized, and their properties were elucidated. The squaramides exhibited thermotropic columnar liquid-crystalline phases at low temperature including room temperature. X-ray crystallographic analysis of methoxy derivative 1c showed the self-assembly of face-to-faced dimer ...
Soyoung Park +5 more
openaire +1 more source
Porous Organic Polymers: From Molecular Design to Scalable Technologies
Small, Volume 22, Issue 46, 18 August 2026.This review introduces porous organic polymers (POPs) for a wide range of applications, including energy storage, gas adsorption, catalysts, adsorbents, biomedical applications, sensors, and other exciting fields, and critically analyzes the synthesis and modification, and how structural topology influences the composites' architecture of POPs, along ...
Hossein Mashhadimoslem +12 more
wiley +1 more source
An asymmetric Michael/Friedel–Crafts cascade reaction with Morita–Baylis–Hillman (MBH) nitroallylic esters and 3-pyrrolyloxindoles has been developed for the stereoselective construction of spirooxindole-containing tetrahydroindolizines.
Chengzhi Xiang (18113790) +8 more
core +1 more source