Triethylamine → HCID 59001047, compound

Participants

Reaction Conditions

Reaction Steps

To a stirred solution of (2R)-2-[N-(4-chloro-benzenesulfonyl)-N-(4-hydroxymethyl-benzyl)amino]-4-methyl-pentanoic acid amide (1.5 g, 3.5 mmol) in CH2Cl2 (15 mL) cooled to 0° C. was added Et3N (0.74 mL, 5.3 mmol). A solution of methanesulfonyl chloride (0.29 mL, 3.5 mmol) in 5 mL CH2Cl2 was added dropwise and the reaction was allowed to stir at 0° C. for 1 h. The reaction mixture was diluted with 25 mL CH2Cl2, quickly washed with 1 N HCl, brine, and dried by passing the organic phase through a cotton plug. The solvent was removed in vacuo affording the title compound in quantitative yield. The resulting foam was used as is in subsequent reactions. MS (ESI), (M+95)+, 409.15 1H NMR (CDCl3) δ 7.70 (d, 2H, J=8.0), 7.48 (d, 2H, J=8.0), 7.41 (d, 2H, J=8.0), 7.38 (d, 2H, J=8.0), 6.27 (br s, 1H), 5.32 (br s, 1H), 5.24 (s, 2H), 4.64 (d, 1H, Jab=16), 4.43 (d, 1H, Jab=16), 4.33 (t, 1H, J=6), 2.90 (s, 3H), 1.90 (m, 1H), 1.60 (m, 2H), 0.96 (d, 3H, J=7.0), 0.91 (d, 3H, J=7.0)

Provenance & Evidence