(Thio)urea containing chiral ammonium salt catalysts.
Sign Up to like & getrecommendations! Published in 2022 at "Chemical record"
DOI: 10.1002/tcr.202200198
Abstract: (Thio)-urea-containing bifunctional quaternary ammonium salts emerged as powerful non-covalently interacting organocatalysts over the course of the last decade. The most commonly employed catalysts in this field are either based on Cinchona alkaloids, α-amino acids, or… read more here.
Keywords: urea containing; thio urea; chiral ammonium; ammonium salt ... See more keywords
Organocatalytic synthesis of enantioenriched 1,2,4-triazolines containing a chiral quaternary carbon center
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DOI: 10.1039/c6ra28800f
Abstract: An efficient asymmetric cyclization reaction of amino-acid-derived isothiocyanates with azodicarboxylates is described. The chiral 1,2,4-triazolines are prepared in good yield (up to 87%) and enantioselectivities (up to 95% ee). read more here.
Keywords: containing chiral; synthesis enantioenriched; enantioenriched triazolines; triazolines containing ... See more keywords
A Diastereomeric Pair of Sulfoxide-containing Chiral MOP-type Ligands: Preparation and Application to Rhodium-catalyzed Asymmetric 1,4-Addition Reactions
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DOI: 10.1246/cl.180260
Abstract: (R,SS)-Sulfoxide-MOP (L2) and (R,RS)-sulfoxide-MOP (L3) were developed as a diastereomeric pair of sulfoxide-containing chiral MOP-type ligands. These two ligands also represent the first monosulfoxide analogues of BINAP. The chiral ligand L2 was successfully applied to… read more here.
Keywords: pair sulfoxide; containing chiral; chiral mop; sulfoxide containing ... See more keywords
Furan-Containing Chiral Spiro-Fused Polycyclic Aromatic Compounds: Synthesis and Photophysical Properties
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DOI: 10.3390/molecules27165103
Abstract: Spiro-fused polycyclic aromatic compounds (PACs) have received growing interest as rigid chiral scaffolds. However, furan-containing spiro-fused PACs have been quite limited. Here, we design spiro[indeno[1,2-b][1]benzofuran-10,10′-indeno[1,2-b][1]benzothiophene] as a new family of spiro-fused PACs that contains a… read more here.
Keywords: containing chiral; furan containing; spiro fused; fused polycyclic ... See more keywords