Results 111 to 120 of about 913 (183)

Prebiotic chiral transfer from self-aminoacylating ribozymes may favor either handedness. [PDF]

open access: yesNat Commun
Kenchel J   +10 more
europepmc   +1 more source

NHC-catalyzed asymmetric synthesis of natural products and pharmaceutical drugs. [PDF]

open access: yesRSC Adv
Shahid A   +9 more
europepmc   +1 more source

5‐Oxazolones, IV. Reactions of 5(4H)‐oxazolones with triphenylphosphonium methylides

open access: yesChemische Berichte, 1988
AbstractThe Wittig reaction of ethyl (triphenylphosphoranylidene)acetate (2a) with the carbonyl group of trisubstituted 5(4H)‐oxazolones 1a–c afforded ethyl 5(4H)‐oxazolylideneacetates 3a–c and triphenylphosphane oxide. Starting from oxazolones 1d–i and ylide 2a, methyleneoxazoles 3d, e and ethyl 5‐oxazoleacetates 4a–f were obtained besides ylides 5a–e
E. Erba, M.L. Gelmi, D. Pocar
openaire   +3 more sources

On the Reactivity of 5(4H)-Oxazolones with Amines

open access: yesHETEROCYCLES, 1988
Peer ...
Blasco, Javier   +5 more
openaire   +3 more sources

Synthesis and Characterization of Carbazolyl-Oxazolones

open access: yes, 2011
In this study, the synthesis of 2-carbazolyl-4-aryl/heteroarylidene-5-oxazolones (3a-k) derivatives starting from carbazole glycine ester I derivatives (1a-b) was described. Thus, we aimed to combine the advantages of carbazole and 5-oxazolone moieties in synthesis of 2-carbazolyl-4-aryl/heteroarylidene-5-oxazolones (3a-k). These derivatives (3a-k) may
Gocmenturk, Mustafa   +2 more
core   +3 more sources

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