Sodium hydride → HCID 24857760, compound

Participants

Reaction Conditions

Reaction Steps

To a stirred solution of diethyl cyanomethyl phosphonate EtO2POCH2CN (0.324 mL, 2 eq) in THF (2 mL) was added sodium hydride (60 mg, 60% in oil) in portions. After 30 minutes, 4-(3,4-dichlorophenyl)-3,4-dihydronaphthalen-2(1H)-one (beta-tetralone) (291 mg, 1 mmol) was added as a solution in THF (3 mL). After the mixture was stirred for two hours at 0° C., the reaction was quenched with ammonium chloride solution, extracted with MTBE, dried over sodium sulfate and evaporated. The residue was separated on silica to give the unsaturated nitrile (0.24 g, 77%) as a pale-green oil. GC-MS Rt=14.59 min, m/z=313 (M+). 1H NMR (CDCl3, δ): 7.37 (d, J=8.3 Hz, 1H), 7.3 (m, 2H), 7.2 (m, 2H), 7.00 (dd, J=2.1, 8.3 Hz, 1H), 6.84 (d, J=7.4 Hz, 1H), 6.64 (bs, 1H), 4.17 (t, J=8.1 Hz, 1H), 3.21 (bs, 2H), 2.69 (dd, J=6.9, 17.3 Hz, 1H), 2.52 (dd, J=8.4, 17.2 Hz, 1H). 13C NMR (CDCl3, δ, mult): 143.9(0), 135.2(0), 132.9(0), 132.5(0), 130.7(1), 130.5(1), 130.0(1), 128.2(1), 127.7(1), 127.5(1), 126.8(1), 126.4(1), 116.5(0), 43.1(1), 35.1(2), 25.1(2).

Provenance & Evidence