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Beilstein J. Org. Chem. 2018, 14, 506–514, doi:10.3762/bjoc.14.36
Graphical Abstract
Figure 1: Examples of naturally occurring oxazoles (a); some drugs containing oxazole as the active moiety (b...
Scheme 1: Synthesis of oxazoles 4 by addition of acyl chlorides to azirines 2, as described by Hassner et al. ...
Scheme 2: Preparation of 2-functionalized oxazoles 7 from 2-(chloromethyl)oxazoles 6 and their application to...
Scheme 3: Integrated continuous-flow synthesis of 2-(azidomethyl)oxazoles 7.
Scheme 4: Side products generated during the reaction of azirine 2a with bromoacyl bromide at room temperatur...
Figure 2: HPLC monitoring of the formation of 2-(azidomethyl)oxazole 7a.
Figure 3: Continuous sequential thermolysis of vinyl azides 1 and ring expansion of azirines 2 with bromoacet...
Figure 4: Continuous-flow three-step sequential synthesis of 2-(azidomethyl)oxazoles 7a–c from vinyl azides 1a...