Results 151 to 160 of about 53,376 (301)

Predicting and Rationalizing Piezoelectricity in Racemic Bioorganic Molecular Crystals. [PDF]

Angew Chem Int Ed Engl
Vishnoi S, Guerin S.
europepmc   +1 more source

Synthesis of Benzopyran Atropisomers via Electrophilic Halogenation

European Journal of Organic Chemistry, EarlyView.
We report a halogenation‐based method for the synthesis of axially chiral benzopyrans, tolerating diverse substituents and halogens (Br, Cl, and I). A double bromination gives bisbenzopyrans with two stereogenic axes. Preliminary enantioselective conditions yield benzopyran atropisomer with up to 56% ee.
Alix Bourhis, Expédite Yen‐Pon, Jean Rodriguez, Damien Bonne   +3 more
wiley   +1 more source

Beyond the Solid Solution: Ordered Enantiomerically Unbalanced Packing in Surface-Confined Tetrahelicene Monolayers. [PDF]

Chirality
Cebrat A, Martin K, Mutombo P, Parschau M, Avarvari N, Ernst KH.   +5 more
europepmc   +1 more source

One‐Pot Gold(I)‐Catalyzed Rautenstrauch Rearrangement/Nitrosocarbonyl Hetero‐Diels–Alder Reaction Sequence for the Synthesis of α‐Hydroxylated Cyclopentenones

European Journal of Organic Chemistry, EarlyView.
The regio‐ and stereoselective synthesis of ring‐fused α‐hydroxy‐2‐cyclopentenones is achieved by a one‐pot gold(I)‐catalyzed Rautenstrauch rearrangement/nitrosocarbonyl hetero‐Diels–Alder reaction/ring opening sequence carried out on suitable propargyl esters followed by selective NO bond cleavage.
Dina Scarpi, Samuele Visi, Andrea Muzzu, Ernesto G. Occhiato   +3 more
wiley   +1 more source

Stereoselective Phosphorylation of d-Ribose as a Driver of Life's Homochirality. [PDF]

Life (Basel)
Subbotin VM, Fiksel G.
europepmc   +1 more source

Epoxidation of Cashmeran and Unprecedented Rearrangement to an α‐Carbonyl δ‐Spirolactone

European Journal of Organic Chemistry, EarlyView.
A new strategy enables diastereoselective conversion of Cashmeran into a previously unknown α‐carbonyl δ‐spirolactone via epoxidation, Baeyer–Villiger oxidation, and acid‐catalyzed rearrangement. Structure and mechanism were confirmed by NMR, single crystal X‐ray diffraction, and computational studies. We report the epoxidation of Cashmeran followed by
Lukas Kell, Niklas Bartsch, Johannes Panten, Marcus Eh, Jan Paradies, Hans Egold, Anke Spannenberg, Thomas Werner   +7 more
wiley   +1 more source

Tolerability and efficacy profile of S-ketamine compared with racemic ketamine in surgical patients, a prospective observational before-and-after study in the perioperative setting. [PDF]

BJA Open
El Khoury D, Cambriel A, Pardo E, Campeanu A, Hirwe A, Bouglé A, Margetis D, Fellous S, Botrel T, Jacquens A, Degos V, Constantin JM, James A, Verdonk F, GRC-29 Consortium.   +14 more
europepmc   +1 more source

A note on the racemization of serine [PDF]

Biochemical Journal, 1951
J C, CRAWHALL, D F, ELLIOTT
openaire   +2 more sources

1‐(Acetylamino)thioxanthones and Derivatives: Synthesis From 1‐Halogenothioxanthones and Biological Properties

European Journal of Organic Chemistry, EarlyView.
The conversion of 1‐halogenothioxanthones into 1‐(acetylamino) derivatives and their NaH‐mediated cyclization have been optimized. This rapid method yields thiochromeno[4,3,2‐de]quinol‐2‐ones that exhibit promising in vitro anticancer activity. Institute and/or researcher Bluesky usernames: https://bsky.app/profile/iscr‐rennes.bsky.social.
Najet Ballagha, Frédéric Lassagne, William Erb, Isabelle Rouaud, Sophie Tomasi, Ziad Fajloun, Mona El Samarji, Mohamad Rima, Anamaria Mendonça Santos, Laurent Picot, Valérie Thiéry, Hédi M’Rabet, Florence Mongin   +12 more
wiley   +1 more source

Kinetic resolution of racemic planar-chiral vinylcymantrenes by molybdenum-catalyzed asymmetric metathesis dimerization. [PDF]

Beilstein J Org Chem
Imazu H, Izu H, Ohki Y, Ogasawara M.
europepmc   +1 more source