Triethylamine → HCID 87318941, compound

Participants

Reaction Steps

trans-2-(6-Chloropyridin-3-yl)cyclopentanol (0.225 g, 1.14 mmol) was dissolved in CH2Cl2 (10 mL) in a 50 mL round bottom flask, the solution cooled in an ice bath under nitrogen and treated with Et3N (0.172 g, 1.71 mmol, 0.24 mL) and methanesulfonyl chloride (0.163 g, 1.42 mmol, 0.11 ml) via syringe with stirring. After 1 h, TLC (hexanes:EtOAc/2:1) indicated a complete conversion. The reaction mixture was concentrated in vacuo then partitioned between EtOAc and 1 N HCl, the layers separated, the organics dried (Na2SO4) filtered and concentrated to give trans-methanesulfonic acid 2-(6-chloropyridin-3-yl)cyclopentyl ester (0.303 g, 97%) as an oil: LC/MS (ESI) m/z 275, 1H NMR (300 MHz, CDCl3) δ 8.28 (d, 1H, J=2.7 Hz), 7.56 (dd, 1H, J=8.1, 2.7 Hz), 7.3 (d, 1H, J=8.1 Hz), 4.93 (apparent q, 1H, J=5.7 Hz), 3.28 (apparent q, 1H, J=8.7 Hz), 2.86 (s, 3H), 2.26 (m, 2H), 2.10-1.80 (m, 3H), 1.73 (m, 1H).

Provenance & Evidence