[3-(5-Nitrofuran-2-yl)-1-phenyl-1H-pyrazol-4-yl]methanol → 3-(5-Nitrofuran-2-yl)-1-phenyl-1H-pyrazole-4-carbaldehyde

Participants

Reaction Steps

Heat 0.42 g of 4-hydroxymethyl-3-(5-nitro-2-furyl)-1-phenylpyrazole with 1.3 g of activated manganese dioxide and 6 ml of chloroform for 4 hours at boiling with removal of water. Filter while warm and extract the filter residue three times by boiling with chloroform. Concentrate the produced organic solutions to obtain 3-(5-nitro-2-furyl)-1-phenylpyrazole-4-carboxaldehyde [m.p. 208° to 209° C].

Provenance & Evidence