1,8-Diazabicyclo(5.4.0)undec-7-ene → HCID 67055888, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 2-chloro-5-phenyl-N-(pyridin-2-ylmethyl)quinazolin-4-amine (5.0 g, 14 mmol) in CH3CN (50 mL) was added tetramethylammonium cyanide (4.5 g, 29 mmol) followed by DBU (4.39 g, 28.88 mmol). Upon completion of addition, the reaction mixture was heated to 80° C. where it stirred for 12 h. After this time, the reaction mixture was quenched with water and then extracted with ethyl acetate. The organic layer was washed successively with water and brine, and the combined organic layers were dried over Na2SO4, filtered and concentrated under reduced pressure. The resulting concentrate was purified by flash column chromatography using 28% ethyl acetate in petroleum ether to yield 5-phenyl-4-(pyridin-2-ylmethylamino)quinazoline-2-carbonitrile (2.1 g) as a brown solid. 1H NMR (400 MHz, DMSO-d6) δ (ppm): 8.15-8.14 (d, J=4.0 Hz, 1H), 7.96-7.87 (m, 2H), 7.75-7.70 (dt, J=7.6, 2.0 Hz, 1H), 7.62-7.45 (m, 6H), 7.34-7.29 (m, 2H), 7.25-7.22 (m, 1H), 4.60 (d, J=3.6 Hz, 2H). LCMS Method O: retention time 1.52 min, [M+1]=338.2.

Provenance & Evidence