N-methyl-2-pyrrolidone → HCID 86732437, compound

Participants

Reaction Conditions

Reaction Steps

100 mg of 2-[1-(4-bromo-2,6-difluorobenzyl)-1H-indazol-3-yl]-5-methoxy-N-(pyridin-4-yl)pyrimidin-4-amine (2-12-1, 0.191 mmol, 1 eq.) was suspended in dry toluol. 1.34 mg of dichloropalladium-triphenylphosphane (1:2) (0.002 mmol, 0.01 eq.) and 71 μl of tributyl(1-ethoxyethenyl)stannane (0.21 mmol, 1.2 eq.) were added. The mixture was stirred for 5 hours at 100° C. bath temperature and for 18 hours at 120° C. bath temperature. 5 mg of dichloropalladium-triphenylphosphane (1:2) (0.007 mmol, 0.035 eq.) and 140 μl of tributyl(1-ethoxyethenyl)stannane (0.42 mmol, 2.4 eq.) and 1 ml of 1-methylpyrrolidin-2-one were added. The solution was stirred for 3 days at 100° C. bath temperature. 5 mg of dichloropalladium-triphenylphosphane (1:2) (0.007 mmol, 0.035 eq.) and 140 μl of tributyl(1-ethoxyethenyl)stannane (0.42 mmol, 2.4 eq.) were added and stirred at 100° C. again for 22 hours. The reaction mixture was concentrated in vacuo and purified by flash chromatography to yield 119 mg (0.2 mmol, 107%) of the analytically pure target compound.

Provenance & Evidence