Journal
SYNTHESIS-STUTTGART
Volume 53, Issue 23, Pages 4419-4427Publisher
GEORG THIEME VERLAG KG
DOI: 10.1055/a-1543-3924
Keywords
photoredox catalysis; isocyanide chemistry; Ugi reaction; aza-Wittig reaction; multicomponent reactions; 1,3,4-oxadiazoles
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A new visible-light photocatalytic multicomponent reaction has been developed for the synthesis of 1,3,4-oxadiazole derivatives, with good functional group tolerance and a broad substrate scope. Additionally, a two-step one-pot protocol for the synthesis of non-symmetrical diacylhydrazines has been reported. This method is particularly useful for late-stage functionalization of amino acids and drugs.
A new visible-light photocatalytic multicomponent reaction (MCR) involving N-alkyl-N-methylanilines, N-isocyanoiminotriphenylphosphorane, and carboxylic acids leading to 1,3,4-oxadiazole derivatives is reported. The developed mild reaction conditions enable a broad substrate scope and good functional group tolerance, as further highlighted in the late-stage functionalization of amino acids and drugs. Additionally, a two-step one-pot protocol for the synthesis of non-symmetrical diacylhydrazines is also reported.
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