Ethanol → HCID 87618919, compound

Participants

Reaction Steps

A mixture of 50 mL of ethanol, 1 mL of acetic acid and 2.5 g of the (rac)-3-[(5-amino-2-chloro-pyrimidin-4-yl)-(2,2-dimethyl-cyclopentyl)-amino]-propanoic acid ethyl ester (V-59) prepared in the previous step was heated at reflux overnight, and then concentrated under reduced pressure. The residue was taken up in dichloromethane and washed successively with 10% sodium bicarbonate solution, and then water and dried over anhydrous sodium sulfate. The mixture was filtered and then concentrated under reduced pressure. Trituration of the residue with ether, provided 1.6 g of (rac)-2-chloro-9-(2,2-dimethyl-cyclopentyl)-5,7,8,9-tetrahydro-pyrimido[4,5-b][1,4]diazepin-6-one (VI-59).

Provenance & Evidence