N-((1,1-dimethylethoxy)carbonyl)-beta-alanine → HCID 86726577, compound

Participants

Reaction Steps

Add 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (2.69 g; 1.5 equiv; 14.06 mmoles) to a flask containing 3-(tert-butoxycarbonylamino)propanoic acid (1.8 g; 1.0 equiv; 9.37 mmoles), N-indan-2-yl-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidin-2-amine (2.50 g; 1.0 equiv; 9.37 mmoles) and N,N-dimethyl-4-pyridinamine, (0.229 g; 0.2 equiv; 1.87 mmoles) in dichloromethane (30 mL). Stir the mixture for 2 hours, then load the solution directly onto a silica gel column and purify by column chromatography (30 to 100% ethyl acetate in dichloromethane) to give tert-butyl {3-[2-(2,3-dihydro-1H-inden-2-ylamino)-7,8-dihydropyrido[4,3-d]pyrimidin-6(5H)-yl]-3-oxopropyl}carbamate (3.42 g; 83%) as a colorless foam: MS (m/z): 438(M+1).

Provenance & Evidence