Isopropylamine → N-isopropyl-6-methyl-2-(methylthio)pyrimidin-4-amine

Participants

Reaction Steps

Isopropylamine (100 mL) was added very slowly to 22.0 g (125.96 mmol) of crude 4-chloro-6-methyl-2-(methylthio)pyrimidine in 70 mL of THF in a 350 mL pressure tube. NOTE: Residual POCl3 caused smoking and bubbling, therefore the addition was done at 0° C. Once acid was quenched, an additional 50 mL of isopropylamine was added and the pressure tube was sealed. The reaction vessel was brought to 60° C. and stirred overnight. The LCMS indicate very little starting material. Solvent was evaporated leaving N-isopropyl-6-methyl-2-(methylthio)pyrimidin-4-amine as a viscous yellow oil. The crude material was taken directly to the next step.

Provenance & Evidence