Results 61 to 70 of about 2,257 (201)
Solvent-free synthesis of enantioenriched β-silyl nitroalkanes under organocatalytic conditions
Beilstein Journal of Organic Chemistry, 2021 An enantioselective 1,4-conjugate addition of nitromethane to β-silyl α,β-unsaturated carbonyl compounds catalyzed by bifunctional squaramide catalysts has been developed.
Akhil K. Dubey, Raghunath Chowdhury
doaj +1 more source
Squaramide-Based Pt(II) Complexes as Potential Oxygen-Regulated Light-Triggered Photocages
, 2018 Two new squaramide-based platinum(II) complexes C1 and C2 have been synthesized and fully characterized. Their photoresponse has been assessed and is discussed.
Jordi Hernando (1323117) +9 more
core +1 more source
Beilstein Journal of Organic Chemistry, 2018 Chiral derivatives of γ-aminobutyric acid are widely used as medicines and can be obtained by organocatalytic Michael additions. We show here the stereoselective synthesis of 4-methylpregabalin stereoisomers using a Michael addition of dimethyl malonate ...
Denisa Vargová +2 more
doaj +1 more source
One-pot synthesis of unsymmetrical squaramides [PDF]
RSC Advances, 2015 The results concerning the first one-pot synthesis of unsymmetrical squaramides are reported.
Alegre-Requena, Juan V. +2 more
openaire +4 more sources
MoleculesAn organocatalytic enantioselective [3+2] cycloaddition reaction involving 2-arylidene-1,3-indandiones and N-2,2-difluoroethylbenzothiophenone imines was developed.
Hong-Yan Liu, Da-Ming Du
doaj +1 more source
Recent Applications of Propylene Carbonate as a Solvent in Sustainable Organic Synthesis
ChemSusChem, Volume 19, Issue 17, 14 September 2026.This review evaluates propylene carbonate (PC) as a non‐toxic green solvent in organic synthesis, highlighting its performance in key reactions including cross‐couplings, asymmetric hydrogenations, peptide synthesis and biocatalysis. Across these processes, PC delivers yields comparable to conventional and alternative green solvents.
Laura G. Aguilar‐Sanchez +1 more
wiley +1 more source
Synthesis of Novel Crown Ether-Squaramides and Their Application as Phase-Transfer Catalysts
Molecules, 2021 This work presents the synthesis of six new phase-transfer organocatalysts in which the squaramide unit is directly linked to the nitrogen atom of an aza-crown ether.
Zsuzsanna Fehér +9 more
doaj +1 more source
Retro‐Hetero‐Michael Addition Strategies in Organic Synthesis
European Journal of Organic Chemistry, Volume 29, Issue 32, 24 August 2026.In this review, synthetic approaches to carbo‐ and heterocyclic compounds, including natural products, published in the last 15 years (2011–2025) which have either relied upon or included a retro‐hetero‐Michael addition step at any stage are discussed.
Dina Scarpi, Ernesto G. Occhiato
wiley +1 more source
Synthesis and characterization of squaramide-based supramolecular polymers [PDF]
, 2022 Supramolecular polymers are class of materials that are formed by non-covalent interactions such as hydrogen bonding, π-π interactions, electrostatic interactions and the hydrophobic effect.
Lauria, F.
core
Single-Stranded Molecular Helical Assembly from a Self-Complementary Squaramide Compound
, 2016 A new helical crystal structure of a disquaramide compound has been solved by means of direct methods from powder X-ray diffraction data. It contains a racemic mixture of alternating clock/anticlockwise rotating helices which are formed through an ...
Rafel Prohens (1411240) +1 more
core +1 more source