Results 51 to 60 of about 53,376 (301)
Advanced Science, EarlyView.A one‐step, asymmetric reductive coupling of alkynes and oxa‐ and aza‐bicyclic olefins using a cobalt/photoredox catalytic system through desymmetrization. ABSTRACT Bicyclo[2.2.1]heptane frameworks represent a privileged structural motif prevalent in numerous natural products and bioactive molecules.
Subhankar Pradhan +5 more
wiley +1 more source
Marine DrugsThe microwave-aided racemic synthesis of six 5-hydroxy-5-vinyl-2-cyclopentenone-type natural products was achieved. A key reaction involving the construction of the α-keto vinyl carbinol function was realized by applying a Mislow–Evans rearrangement of ...
Yoshihide Usami +6 more
doaj +1 more source
Racemic 4-(4-tert-butylphenyl)-2,6-dimethylcyclohex-3-enecarboxylic acid
Acta Crystallographica Section E, 2008 The chirality of the title compound, C19H26O2, is solely generated by the presence of the double bond in the cyclohexene ring. This compound was synthesized to study the interaction of the two enantiomers in the solid state.
Paul D. Robinson +2 more
doaj +1 more source
LXXXVIII.—Racemism and pseudoracemism [PDF]
J. Chem. Soc., Trans., 1897 n ...
Kipping, Frederic Stanley +1 more
openaire +1 more source
Advanced Science, EarlyView.A stimuli‐responsive supramolecular system has been rationally designed enabling hierarchical control over supramolecular handedness. This hybrid architecture retains orthogonal host‐guest properties and displays unique amphiphilicity‐directed chiral self‐assembly.
Minzan Zuo +8 more
wiley +1 more source
Therapeutic Advances in Respiratory Disease, 2015 Objectives: The aim of the study was to compare the diagnostic yield and safety profile of sputum induction (SI) with nebulized racemic salbutamol solution versus hypertonic saline in smear-negative pulmonary tuberculosis (TB).
Warangkana Keeratichananont +3 more
doaj +1 more source
Racemic methyl 3,10-dioxa-2-azatricyclo[6.2.1.02,6]undecane-4-carboxylate
Acta Crystallographica Section E, 2011 The structure of the racemic title compound, C10H15NO4, consists of a tricyclic skeleton comprising a six-membered piperidine ring and five-membered isoxazolidine and tetrahydrofuran rings. The piperidine ring adopts a distorted chair conformation, while
Basem A. Moosa +3 more
doaj +1 more source
Improved preparation of racemic 1,2,3,6,7,8,11,12,13-nonamethoxy-10,15-dihydro-5H-tribenzo[a,d,g]cyclononene [PDF]
, 2007 Racemic 1,2,3,6,7,8,11,12,13-nonamethoxy-10,15-dihydro-5H-trbibenzo [a,d,g] cyclononene was prepared via trimerization of 3,4,5-trimethoxybenzyl alcohol catalyzed by Lewis acids such as AlCl3, ZnCl2, FeCl3 and SnCl4 in chlorinated solvents.
Zhang, G +3 more
core
Racemic alkylamides of trans-cyclohexane-β-amino acids surpass the gelation ability of their pure enantiomers. From macroscopic behavior to microscopic structure [PDF]
, 2022 We describe the excellent gelation capabilities of amides derived from trans-cyclohexane β-amino acid, demonstrating their great potential to generate lypogels in a wide variety of solvents.
Bruno , Dacuña +4 more
core +1 more source
Advanced Science, EarlyView.We report a palladium‐catalyzed atroposelective cyclization of N‐heterobiaryl triflates with alkynyl boronates to access seven‐membered 1,2‐BN‐bridged biaryls with high yields and excellent enantioselectivity via a cascade DyKAT, cis‐carbopalladation, and 1,2‐migration, which expands the toolbox for axially chiral π‐conjugated boron compounds and opens
Fengya He +6 more
wiley +1 more source