Toluene → 8-cyclopentyl-6-(1-ethoxy-vinyl)-5-methyl-2-[5-(4-methyl-piperazin-1-yl)-pyridin-2-ylamino]-8H-pyrido[2,3-d]pyrimidin-7-one

Participants

Reaction Conditions

Reaction Steps

A 6-dram vial was charged with 6-bromo-8-cyclopentyl-5-methyl-2-[5-(4-methyl-piperazin-1-yl)-pyridin-2-ylamino]-8H-pyrido[2,3-d]pyrimidin-7-one (266 mg, 0.53 mmol) and tetrakis(triphenylphosphine)palladium(0) (61 mg, 0.053 mmol) and the atmosphere replaced with argon. Toluene (5 ml) was added followed by tributyl-(1-ethoxy-vinyl)-stannane (289 mg, 0.80 mmol). The vial was heated to 110° C. and stirred for 12 h. The reaction mixture was diluted with chloroform (25 ml) and adsorbed onto silica gel. Chromatographic purification on silica gel (chloroform/2-propanol+1% TEA gradient) gave the 8-cyclopentyl-6-(1-ethoxy-vinyl)-5-methyl-2-[5-(4-methyl-piperazin-1-yl)-pyridin-2-ylamino]-8H-pyrido[2,3-d]pyrimidin-7-one (237 mg, 0.48 mmol). MS (APCI+) 490 (M+1, 100).

Provenance & Evidence