Allyl chloroformate → HCID 86732422, compound

Participants

Reaction Steps

96.3 mg of tert-butyl 3-[5-methoxy-4-(pyridin-4-ylamino)pyrimidin-2-yl]-1H-indazole-1-carboxylate (1-8-1, 0.23 mmol, 1 eq.) was suspended in 7 ml of pyridine. 27.7 mg of prop-2-en-1-yl carbonochloridate (0.23 mmol, 1 eq.) were added and stirred for two hours at room temperature. Twice 27.7 mg of prop-2-en-1-yl carbonochloridate (0.23 mmol, 1 eq.) were added again and stirred the first time for 24 hours and the second time for three days at room temperature. The reaction mixture was concentrated in vacuo. To the residue was added water and acidified with 1M aq. hydrogen chloride solution. This aqueous layer was extracted three times with ethyl acetate. The combined organic layers were washed with brine, dried over a silicone filter and concentrated under vacuo. Purification by flash chromatography (ethyl acetate/methanol 0-50%) provided 50.8 mg (0.09 mmol, 39.97%) of the analytically pure target compound.

Provenance & Evidence