Sodium hydride → HCID 58204078, compound

Participants

Reaction Conditions

Reaction Steps

Compound 134 (800 mg, 2.0 mmol) was dissolved in THF (20 mL). It was stirred at 0° C. and NaH (58 mg, 2.4 mmol) was added. Then the mixture was warmed to r.t. and stirred for further 0.5 h. The mixture was cooled to 0° C. and tert-butyl 3-bromopropanoate (502 mg, 2.4 mmol) was added. Later, it was warmed to 80° C. for 2 h. The reaction mixture was filtered to gather the solution. Then water was added into the solution. It was extracted by DCM (20 mL×3). The combined organics were dried over Na2SO4, concentrated in vacuo, and separated by prep TLC (DCM) to give {2-[2-(2,4-Difluoro-phenyl)-2H-[1,2,4]triazol-3-yl]-4,5-dihydro-6-oxa-1-thia-10-aza-benzo[e]azulen-9-ylamino}-acetic acid tert-butyl ester (900 mg, yield: 90%)1HNMR (CDCl3, 400 MHz): δ 8.04 (s, 1H), 7.45-7.52 (m, 1H), 7.42 (s, 1H), 7.06-6.93 (m, 4H). 4.25-4.15 (m, 2H), 4.08-3.99 (m, 2H), 3.06 (s, 2H), 1.38 (s, 9H). LC-MS (ESI): m/z=512 [M+H]+

Provenance & Evidence