Ethyl Thioglycolate → HCID 118036756, compound

Participants

Reaction Steps

A solution of ethyl 2-mercaptoacetate (0.593 mL, 5.25 mmol) in THF (10 ml) was added to a suspension of NaH (60% dispersion in mineral oil, 204 mg, 5.10 mmol) in THF (20 ml) at room temperature, followed by the addition of a solution of 2-((tert-butoxycarbonyl)amino)ethyl 4-methylbenzenesulfonate (intermediate 212, 1.71 g, 4.61 mmol) in THF (20 ml). The reaction mixture was stirred at room temperature for approximately 20 h and diluted with ethyl acetate and water. Layers were separated and the aqueous layer was extracted with ethyl acetate. The organic layers were combined, washed with brine, dried using MgSO4, filtered and concentrated. The crude product was purified by silica gel column chromatography eluting with a gradient of EtOAc (0-40%) in hexane. Fractions containing the product were combined and evaporated to yield the title compound as colorless oil. (UPLC-MS 3) ESI-MS 264.2 [M+H]+. 1H NMR (400 MHz, CDCl3) δ 4.93 (br s, 1H), 4.25-4.14 (m, 2H), 3.39-3.30 (m, 2H), 3.23 (s, 2H), 2.77 (t, 2H), 1.44 (s, 9H), 1.35-1.21 (t, 3H).

Provenance & Evidence