{1-[4-(2-ethyl-5,7-dimethyl-pyrazolo[1,5-a]pyrimidin-3-ylmethyl)-phenyl]-3-methyl-1H-pyrazol-4-yl}-methanol → 1-[4-(2-ethyl-5,7-dimethyl-pyrazolo[1,5-a]pyrimidin-3-ylmethyl)-phenyl]-3-methyl-1H-pyrazole-4-carbaldehyde

Participants

Reaction Steps

{1-[4-(2-Ethyl-5,7-dimethyl-pyrazolo[1,5-a]pyrimidin-3-ylmethyl)-phenyl]-3-methyl-1H-pyrazol-4-yl}-methanol (18) (500 mg, 1.38 mmol) was dissolved in 10 ml of dichloromethane and after addition of manganese dioxide (1.2 g, 13.8 mmol) the reaction mixture was stirred for 3 h at rt. The mixture was filtrated though celite and evaporated under reduced pressure. The product was used in the next step without further purification.

Provenance & Evidence