Chloroacetyl chloride → HCID 131729372, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of (3aR,7S,7aS)-7-(4-amino-3-ethyl-5-fluoro-benzyl)-3-(3-tert-butyl-benzyl)-5,5-dioxo-hexahydro-1-oxa-5lambda*6*-thia-3-aza-inden-2-one (0.245 g, 0.5 mmol) and DIPEA (0.52 mL, 3 mmol) in CH2Cl2 was slowly added a solution of 2-chloroacetylchloride (0.226 g, 2.0 mmol) dissolved in CH2Cl2 (2 mL) at 0-5° C. After stirring for 1 h at 0-5° C. the reaction mixture was poured onto cold saturated NaHCO3 solution and extracted with CH2Cl2. Combined organic extracts were washed with brine, dried over MgSO4, filtered and evaporated. The crude product was dissolved in MeOH, stirred for 0.5 h at 25° C., and evaporated again. The title compound was obtained after chromatographic purification (Combi Flash, 12 g silica gel, hexane-EtOAc) as a light yellow solid: TLC (toluene-EtOAc 1:1) Rf=0.44; UPLC RtD=1.799 min; ESIMS [M+NH4]+=582; 1H NMR (600 MHz, DMSO-d6): δ 9.70 (s, 1H), 7.39 (s, 1H), 7.32 (d, 1H), 7.27 (t, 1H), 7.13 (d, 1H), 6.98 (d, 1H), 6.95 (s, 1H), 4.42 (d, 1H), 4.28 (s, 2H), 4.21 (d, 1H), 4.19 (t, 1H), 3.72 (m, 2H), 3.48 (t, 1H), 3.14 (dd, 1H), 2.98 (m, 2H), 2.55 (m, 4H), 1.26 (s, 9H), 1.08 (t, 3H).

Provenance & Evidence