2-Bromoethyl methyl ether → (S)-N-(5-(2-methoxyethylthio)-3-(2-methylpyridin-3-yloxy)pyridin-2-yl)-3-(1,4-dioxaspiro[4.5]decan-2-yl)-1,2,4-thiadiazol-5-amine

Participants

Reaction Steps

(S)-Methyl 3-(6-(3-(1,4-dioxaspiro[4.5]decan-2-yl)-1,2,4-thiadiazol-5-ylamino)-5-(2-methylpyridin-3-yloxy)pyridin-3-ylthio)propanoate (2.0 g, 3.68 mmol) was dissolved in THF (20 mL) and nitrogen was bubbled through the solution for 5 minutes. Potassium 2-methylpropan-2-olate (1M in THF, 11.0 ml, 11.0 mmol) was added and the reaction was stirred at ambient temperature for 1 minute. 1-Bromo-2-methoxyethane (0.518 ml, 5.52 mmol) was added and the reaction was stirred at ambient temperature for 20 minutes. The reaction was partitioned between EtOAc and aqueous NH4Cl, dried, filtered and concentrated. The residue was purified over silica gel (100% EtOAc) to afford (S)—N-(5-(2-methoxyethylthio)-3-(2-methylpyridin-3-yloxy)pyridin-2-yl)-3-(1,4-dioxaspiro[4.5]decan-2-yl)-1,2,4-thiadiazol-5-amine (1.9 g, 3.68 mmol, 100% yield).

Provenance & Evidence