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Beilstein J. Org. Chem. 2022, 18, 232–239, doi:10.3762/bjoc.18.27
Graphical Abstract
Scheme 1: Methods for accessing 1,3,4-oxadiazoles.
Scheme 2: Synthesis of acyl hydrazones 1a–j.
Scheme 3: Iodine-mediated cyclisation of hydrazones 1a–j yielding oxadiazoles 2a–j. Reaction conditions: 1a–j...
Scheme 4: Synthesis of complex oxadiazoles.
Scheme 5: Continuous flow scale-up reaction with in-line quench and extraction.
Scheme 6: Continuous flow setup equipped with in-line extraction and purification.