Diiodomethane → 5-iodo-1-(4-methoxyphenyl)-3-methyl-1H-pyrazole-4-carbonitrile

Participants

Reaction Conditions

Reaction Steps

To a stirred solution of 5-amino-1-(4-methoxyphenyl)-3-methyl-1H-pyrazole-4-carbonitrile (1.30 g, 5.70 mmol) in MeCN (8 mL) was added diiodomethane (1.93 mL, 23.9 mmol) followed by isoamyl nitrite (0.19 mL, 1.42 mmol). The reaction vessel was heated using a heating gun to initiate the reaction. After the rest of isoamyl nitrite (1.72 mL, 12.8 mmol) was added and the reaction was stirred for 1 hour at 50° C. The reaction was concentrated into silica and purified using silica gel (Heptane-CH2Cl2 1:0 to 0:1) gave 5-iodo-1-(4-methoxyphenyl)-3-methyl-1H-pyrazole-4-carbonitrile (1.45 g, 75%).

Provenance & Evidence