Hydrochloric Acid → HCID 131735847, compound

Participants

Reaction Steps

Palladium 10 wt. % on activated carbon (51 mg, 40% w/w) was added to a solution of 6 (128 mg, 0.36 mmol) in ethyl acetate (4 mL), and allowed to react under hydrogen atmosphere for 16 h. The catalyst was filtered off and the solvent was evaporated in vacuo. The crude residue was dissolved in HCl (0.1 M soln in MeOH, 3.6 mL, 0.36 mmol). After 45 min the mixture was concentrated under reduced pressure and the residue repeatedly washed with diethyl ether, affording 7 as a yellowish solid (118 mg, 90% yield). Mp 193-196° C. 1H-NMR (400 MHz, DMSO): δ 1.23 (12H, s, pinacol protons), 2.59 (2H, d, J 3.82, BCH2), 4.37 (2H, s, PhCH2), 6.76 (1H, br, SO2NH), 7.30-7.36 (3H, m, HArom), 7.46 (1H, t, J 7.60, HArom), 9.60-10.60 (3H, br, NH3+). 13C-NMR (100 MHz, DMSO): δ 25.0, 27.5 (CB), 55.9, 84.2, 122.8, 125.3, 130.1, 130.5, 132.7, 133.0. EI-MS, m/z: 326 (M+, 5%), 156 (8), 107 (64), 106 (100), 104 (15), 77 (11), 59 (11), 41 (8). Anal. Calcd. for C14H24BClN2O4S: C, 46.36; H, 6.67; N, 7.72; S, 8.84. Found: C, 46.41; H, 6.50; N, 7.55; S, 8.68.

Provenance & Evidence