Pyrimidine → Methyl 3-[cyclopentyl(2-chloro-5-nitropyrimidin-4-yl)amino]propanoate

Participants

Reaction Conditions

Reaction Steps

Methyl 3-(cyclopentylamino)propanoate (838 mg, 0.005 mol) and K2CO3 (676 mg, 0.005 mol) were added to acetone (5 ml) and the resulting mixture cooled to 0° C. using an ice-bath before the addition of 2,4-dichloro-5-nitropyrimidine (1.044 g, 1.1 eq). The reaction mixture (RM) was then warmed to rt and stirring continued for an additional 16 h before the addition of a further 0.12 eq of the pyrimidine. Stirring was then continued for a further 3 h. The RM was then evaporated under reduced pressure and the product extracted using EtOAc/H2O. The organic extracts were combined, washed with sat NaCl, dried using MgSO4, filtered and the filtrate evaporated under reduced pressure and further dried in vacuo to give the product as a brown oily residue (1.04 g, 65%); Rt=16 min (Vydac 1); ME+ve: 329.1.

Provenance & Evidence