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Search for "15N-labeled 1,2-oxazole" in Full Text gives 1 result(s) in Beilstein Journal of Organic Chemistry.
Beilstein J. Org. Chem. 2022, 18, 102–109, doi:10.3762/bjoc.18.11
Graphical Abstract
Figure 1: Examples of amino-functionalized 1,2-oxazole derivatives I–VIII.
Scheme 1: Conversion of cyclic amino acids to 1,2-oxazole derivatives.
Scheme 2: Plausible mechanisms for the formation of 1,2-oxazoles 4a–h and VII from β-enamino ketoesters 3a–h ...
Figure 2: (a) 1H NMR (italics), 13C NMR (normal), and 15N NMR (bold) chemical shifts (ppm) of compound 3a in ...
Scheme 3: Synthesis of compound 15N-1,2-oxazole 5. The coupling constants of JHN and JCN from 15N2 are indica...
Figure 3: Stacked chromatogram view of pairs of enantiomers with area, %: (R)-4b, ee 100% (tR = 10.1 min) and...
Figure 4: (a) Structure of 4b with syn- and anti-conformers; (b) superimposed 1H NMR and 1D gradient NOE spec...
Scheme 4: Synthesis of 2-[4-(methoxycarbonyl)-1,2-oxazol-5-yl]cycloaminyl-1-ium trifluoroacetates 6a,b.
Figure 5: ORTEP diagram of the asymmetric unit consisting of two cations 6b(A) and 6b(B) and triflate anions.