tert-Butanol → HCID 59190362, compound

Participants

Reaction Steps

To a stirred solution of (R)-4-allyl-1-((S)-1-(4-bromophenyl)ethyl)-4-phenyl-1,3-diazepan-2-one (51 mg, 0.12 mmol) in THF (2 mL) and water (2 mL) were added NaIO4 (132 mg, 0.62 mmol) and 2.5% OSO4 in t-BuOH (0.032 mL, 0.003 mmol). The mixture was stirred at rt for 5 h and concentrated under reduced pressure. The residue was partitioned between EtOAc (90 mL) and brine (20 mL). The organic layer was concentrated and the residue was dissolved in MeOH (20 mL). The solution was cooled in an ice bath and NaBH4 (50 mg) was added. The mixture was stirred overnight and concentrated. The residue was taken up in EtOAc (90 mL), washed with 5% aq HCl (20 mL) and satd aq NaHCO3 (20 mL), and dried over Na2SO4. Removal of the solvent left an oil (43 mg) which was purified by prep HPLC to afford (R)-1-((S)-1-(4-bromophenyl)ethyl)-4-(2-hydroxyethyl)-4-phenyl-1,3-diazepan-2-one (19 mg, 37%) as an oil. LC-MS Method 2 tR=8.7 min, m/z=419, 417; 1H NMR (CDCl3) δ 1.0-1.2 (2H), 1.23 (d, 3H), 1.77 (m, 1H), 2.01 (m, 1H), 2.24 (m, 2H), 2.66 (m, 1H), 2.89 (m, 1H), 3.45 (m, 1H), 3.72 (m, 1H), 4.10 (br s, 1H), 5.50 (q, 1H), 6.79 (s, 1H), 7.24 (3H), 7.37 (2H), 7.43 (4H)

Provenance & Evidence