Dimethyl Sulfoxide → 2-chloro-5-isopropyl-6a,7,9,10-tetrahydro-[1,4]oxazino[3,4-h]pteridin-6(5H)-one

Participants

Reaction Conditions

Reaction Steps

A round-bottom flask was charged with 2,4-dichloro-N-isopropylpyrimidin-5-amine (940 mg, 4.56 mmol), morpholine-3-carboxylic acid hydrochloride (994 mg, 5.93 mmol), DIPEA (3.19 mL, 18.25 mmol) and DMSO (8 mL). The flask was heated overnight at 100° C. The solution was diluted with water and refrigerated for 2 hours. The aqueous solution was extracted twice with EtOAc. The organic layers were combined, dried over magnesium sulfate, filtered, and evaporated in vacuo to give 2-chloro-5-isopropyl-6a,7,9,10-tetrahydro-[1,4]oxazino[3,4-h]pteridin-6(5H)-one as a brown solid (1.2 g). MS [M+H] Found 283.

Provenance & Evidence