Organocatalytic atroposelective construction of axially chiral arylquinones
Nature Communications, 2019 Axially chiral compounds have widespread use in asymmetric catalysis. Here, the authors disclose a highly enantioselective synthesis of axially chiral o-naphthoquinones by chiral phosphoric acid catalysis and central-to-axial chirality conversion.
Shuai Zhu +8 more
doaj +1 more source
Metabolism of amino acid amides in Pseudomonas putida ATCC 12633 [PDF]
, 1993 The metabolism of the natural amino acid L-valine, the unnatural amino acids D-valine, and D-, L-phenylglycine (D-, L-PG), and the unnatural amino acid amides D-, L-phenylglycine amide (D, L-PG-NH2) and L-valine amide (L-Val-NH2) was studied in ...
Croes, L.M., +4 more
core +1 more source
Brønsted acid-catalysed enantioselective construction of axially chiral arylquinazolinones
Nature Communications, 2017 Axially chiral arylquinazolinones are structural motifs in several natural products and can also act as chiral ligands. Here, the authors show a chiral phosphoric acid-catalysed strategy to access enantiomerically pure arylquinazolinones by efficient ...
Yong-Bin Wang +3 more
doaj +1 more source
Applications of chiral spirocyclic phosphoric acid in the synthesis of natural products [PDF]
E3S Web of Conferences, 2021 With a 10 years development, chiral spirocyclic phosphoric acids (SPAs) have attracted a substantial amount of attention from the synthetic organic chemistry community. This kind of small molecule organic catalysts has some advantages like easy to obtain,
Yang Fan
doaj +1 more source
Chiral separation by enantioselective liquid–liquid extraction [PDF]
, 2011 The literature on enantioselective liquid–liquid extraction (ELLE) spans more than half a century of research. Nonetheless, a comprehensive overview has not appeared during the past few decades.
Feringa, Ben L., +5 more
core +3 more sources
Asymmetric additions to dienes catalysed by a dithiophosphoric acid. [PDF]
, 2011 Chiral Brønsted acids (proton donors) have been shown to facilitate a broad range of asymmetric chemical transformations under catalytic conditions without requiring additional toxic or expensive metals.
Hamilton, Gregory +4 more
core +2 more sources
Nature Communications, 2023 Heterohelicenes are of increasing importance in the fields of materials science, molecular recognition, and asymmetric catalysis. However, enantioselective construction of these molecules, especially by organocatalytic methods, is challenging, and few ...
Chengwen Li +6 more
doaj +1 more source
Development of chiral phosphoric acids based on ferrocene-bridged paracyclophane frameworks [PDF]
, 2013 International audienceThis work deals with the development of a new family of planar chiral phosphoric acids, based on a ferrocenophane/paracyclophane scaffold.
Betzer, Jean-François +7 more
core +6 more sources
Chiral Phosphoric Acid Diesters as Ligands in Asymmetric Transition Metal Catalyzed Hydrogenation
CHIMIA, 2003 A chiral phosphoric acid diester, specifically the BINOL-based derivative, has been used for the first time in Rh-, Ir-, and Pd-catalyzed hydrogenation of olefins and imines, giving ee-values of up to 85%.
Manfred T. Reetz +2 more
doaj +1 more source
Development of diverse adjustable axially chiral biphenyl ligands and catalysts
iScience, 2023 Summary: Development of highly efficient and practical chiral ligands and catalysts is an eternal theme in asymmetric synthesis. Here, we report the design, synthesis, and evaluation of a new kind of adjustable axially chiral biphenyl ligands and ...
Jiyang Jie +3 more
doaj +1 more source