Rapid Multistep Synthesis of 1,2,4-Oxadiazoles in a Single Continuous Microreactor Sequence
作者:Daniel Grant、Russell Dahl、Nicholas D. P. Cosford
DOI:10.1021/jo801152c
日期:2008.9.19
A general method for the synthesis of bis-substituted 1,2,4-oxadiazoles from readily available aryinitriles and activated carbonyls in a single continuous microreactor sequence is described. The synthesis incorporates three sequential microreactors to produce 1,2,4-oxadiazoles in similar to 30 min in quantities (40-80 mg) sufficient for full characterization and rapid library supply.
Facile room-temperature assembly of the 1,2,4-oxadiazole core from readily available amidoximes and carboxylic acids
A one-pot ambient-temperature procedure for the synthesis of 3,5-disubstituted-1,2,4-oxadiazoles fromamidoximes and carboxylic acids under superbase-promoted conditions is reported.