Triethylamine → HCID 87425656, compound

Participants

Reaction Steps

To a mixture of Example 17A (19.9 g, 66 mmol) and triethylamine (9.5 mL, 70 mmol) in THF (200 mL) at 0° C. under nitrogen was added methanesulfonyl chloride (15.08 g, 132 mmol) drop wise over 30 minutes. The mixture was allowed to warm up to room temperature, stirred for 12 hours, and then concentrated under reduced pressure. The residue was partitioned between water and ethyl acetate and the aqueous layer was extracted with ethyl acetate (3×300 mL). The combined organic layers were dried (magnesium sulfate), filtered and concentrated to a yellow oil. The yellow oil was purified using a Biotage 65+ eluting with 100% ethyl acetate to provide the titled compound. MS (ESI) m/e 380 (M+H)+; 1H NMR (300 MHz, CD3OD) δ ppm 1.44 (m, 9H) 2.22 (m, 1H) 2.65 (m, 1H) 3.05 (m, 1H) 3.14 (d, 3H) 3.17 (m, 1H) 3.74 (m, 3.73 Hz, 1H) 3.81 (m, 2H) 4.00 (m, 1H) 4.53 (m, 1H) 4.70 (m, 2H) 5.32 (m, 1H).

Provenance & Evidence