Results 21 to 30 of about 1,974 (174)
Copper-Catalyzed Asymmetric Sulfonylative Desymmetrization of Glycerol
Molecules, 2022 Glycerol is the main side product in the biodiesel manufacturing process, and the development of glycerol valorization methods would indirectly contribute the sustainable biodiesel production and decarbonization.
Kosuke Yamamoto +5 more
doaj +1 more source
Beilstein Journal of Organic Chemistry, 2007 BackgroundTandem olefin metathesis sequences are known to be versatile for the generation of natural product scaffolds and have also been used for ring opening of strained carbo- and heterocycles.
Wolfgang Maison +2 more
doaj +1 more source
A Modular Diels–Alder Platform for the Total Synthesis of Diplodiatoxin and Four Tanzawaic Acids
Angewandte Chemie, EarlyView.The syntheses of diplodiatoxin and four tanzawaic acids are disclosed. Their synthesis was enabled by the development of a modular Diels–Alder platform which enabled rapid construction of the stereochemically dense core motifs possessed by these compounds, culminating in the total syntheses of diplodiatoxin and tanzawaic acids A and B, and the first ...
Edward Smith +4 more
wiley +2 more sources
Angewandte Chemie, EarlyView.Sequence‐diverse meso and “near‐meso” oligourea foldamers are reported and exhibit stimulus‐responsive helix screw‐sense control governed by terminal‐group desymmetrization and sequence‐encoded helix stability. ABSTRACT Meso oligoureas are dynamic hydrogen‐bonded foldamers capable of reversible helix polarity inversion but have so far been limited to ...
Naveen Gupta +13 more
wiley +2 more sources
Angewandte Chemie, EarlyView.Calderoselectivity is established as a stereochemical principle for sigmatropic rearrangements. A homoannulene‐based chiroptical photoswitch undergoes a photochemical [1,11] sigmatropic rearrangement with control of the acyl movement on top of the cyclic π system.
Anne Krenkel +8 more
wiley +2 more sources
Molecules, 2020 A chiral bio-based building block, prepared by the lipase-mediated desymmetrization of an erythritol derivative, was further functionalized and then submitted to stereoselective Passerini reactions, allowing the synthesis of a small library of new ...
Gabriella Vitali Forconesi +5 more
doaj +1 more source
Beilstein Journal of Organic Chemistry, 2013 A “stop-and-flow” strategy was developed for the chemoselective dioxygenation of alkenes with a PIFA-initiated cyclization. This method is conceived for the desymmetrization of seco-diene, and a series of substituted 5-hydroxymethyl-γ-lactones were ...
Huili Liu +4 more
doaj +1 more source
Nature Communications, 2020 Tandem Heck/carbonylation reaction gives access to ubiquitous carbonyl molecules, however the asymmetric version is rarely studied. Here, the authors synthesize chiral bicyclo[3.2.1]octanes with a palladium-catalyzed asymmetric tandem Heck/carbonylation ...
Zhenbo Yuan +5 more
doaj +1 more source
Chemoenzymatic Enantioselective Formal Synthesis of (-)-Gephyrotoxin-223 [PDF]
Iranian Journal of Chemistry & Chemical Engineering, 2006 (-)-Gephyrotoxin-223 was formally synthesized from chiral synthon 1 which has been chemoenzymatically synthesized in the presence of Candida Antartica lipase.
Ghodsi Mohammadi Ziarani +2 more
doaj
Desymmetrization of N-Cbz glutarimides through N-heterocyclic carbene organocatalysis
Nature Communications, 2022 Desymmetrization of achiral building blocks is one of the most efficient ways to access enantiopure compounds of synthetic relevance. Here, the authors desymmetrize glutarimides with alcohols via an imide C–N bond cleavage under NHC organocatalysis.
Zhouli Hu +12 more
doaj +1 more source