Triethylamine → 3-Chloropropyl 2-(indan-2-ylamino)-5,7-dihydropyrrolo[3,4-d]pyrimidine-6-carboxylate

Participants

Reaction Steps

Add a solution of 3-chloropropyl carbonochloridate (0.55 mL; 1.48 equiv; 4.54 mmoles) in tetrahydrofuran (21 mL) dropwise over 1 hour to a mixture of N-(2,3-dihydro-1H-inden-2-yl)-6,7-dihydro-5H-pyrrolo[3,4-d]pyrimidin-2-amine dihydrochloride hydrate (1.0 g; 1.0 equiv; 3.07 mmoles) and triethylamine (2.2 mL; 5.1 equiv; 15.78 mmoles) in tetrahydrofuran (21 mL). Stir the solution for 18 hours, then dilute with dichloromethane and wash with sodium bicarbonate solution. Further extract the aqueous layer with dichloromethane (2×). Dry the combined organic extracts over sodium sulfate, filter, and concentrate to afford 3-chloropropyl 2-(indan-2-ylamino)-5,7-dihydropyrrolo[3,4-d]pyrimidine-6-carboxylate (1.15 g; 100%) as a brown solid: MS (m/z): 373(M+1).

Provenance & Evidence