Sodium triacetoxyborohydride → 2-(2,6-dichlorophenyl)-N-((1-methylcyclopropyl)methyl)-2-((triethylsilyl)oxy)ethanamine

Participants

Reaction Steps

To a mixture of 1-methylcyclopropanecarbaldehyde (32.8 mg, 0.390 mmol) in DCM (2.0 ml) was added 2-(2,6-dichlorophenyl)-2-((triethylsilyl)oxy)ethanamine (125 mg, 0.390 mmol) followed by NaBH(OAc)3 (124 mg, 0.585 mmol). After 45 min, this was quenched with sat. aq. NaHCO3. The layers were separated. The aqueous layer was extracted with DCM. The combined organic layers were concentrated then purified by prep TLC eluted with 5% MeOH/DCM to provide 2-(2,6-dichlorophenyl)-N-((1-methylcyclopropyl)methyl)-2-((triethylsilyl)oxy)ethanamine (95 mg, 0.245 mmol, 62.7% yield). 1H NMR (500 MHz, CDCl3) δ 7.28-7.30 (m, 2H), 7.12-7.16 (m, 1H), 5.65 (br. s., 1H), 3.37-3.44 (m, 1H), 2.82-2.90 (m, 1H), 2.69 (br. s., 1H), 2.48 (d, J=11.86 Hz, 1H), 1.60 (br. s., 1H), 1.15 (s, 3H), 0.87-0.92 (m, 9H), 0.51-0.63 (m, 6H), 0.28-0.44 (m, 4H); LCMS (ESI) m/z 388.3 (M+H)+.

Provenance & Evidence