Abstract3‐(3′‐,4′‐Hydroxyphenyl)sydnones were prepared by dealkylation of 3‐(3′‐,4′‐alkoxyphenyl)sydnones with concentrated sulfuric acid at room temperature in a range of 59 to 86% yield.
Abstract3‐(3′‐,4′‐Hydroxyphenyl)sydnones were prepared by dealkylation of 3‐(3′‐,4′‐alkoxyphenyl)sydnones with concentrated sulfuric acid at room temperature in a range of 59 to 86% yield.
A general and regioselective synthesis of 3-trifluoromethyl 1,2,4-triazoles has been achieved through photocycloaddition of sydnone with trifluoroacetonitrile. This method employed trifluoroacetaldehyde O-(aryl)oxime as the CF3CN precursor and tolerated various functional groups to furnish 3-trifluoromethyl 1,2,4-triazole products in moderate to good yields. Mechanistic experiments revealed an energy