Sodium hydride → HCID 131733410, compound

Participants

Reaction Steps

To a solution of (+/−)-(3S,4S)-1-azabicyclo[2.2.1]heptan-3-ol (294 mg, 2.6 mmol) in THF (5 mL) at room temperature was added NaH [60%, oil] (107 mg, 2.67 mmol). The reaction mixture was stirred for 15 min and 1-(2-isocyanatopropan-2-yl)-3-(prop-1-en-2-yl)benzene (344 uL, 1.73 mmol) was added dropwise. The reaction was stirred for a period of 30 min and quenched with brine. The solution was extracted with EtOAc and the organic layer was dried over Na2SO4 and concentrated. The crude material was purified on a combiflash (SiO2 cartridge, CHCl3 and 2N NH3 in MeOH) to afford the corresponding carbamate as a clear oil (140 mg, 26%). 1H NMR (400 MHz, CDCl3) δ 7.26-7.20 (m, 3H), 7.11 (m, 1H), 5.18 (s, 1H), 5.19 (br s, 1H), 5.01 (s, 1H), 4.81 (br s, 1H), 2.99 (br s, 1H), 2.82(br s, 1H), 2.70 (br s, 1H), 2.53 (br s, 2H), 2.33 (br s, 1H), 2.02 (s, 3H), 1.76 (br s, 1H) 1.61 (br s, 6H), 1.52 (br s, 1H), 1.37 (br s, 1H) ppm. 13C NMR (100 MHz, CDCl3) δ 147.1, 143.7, 141.5, 128.5, 124.1, 122.1, 112.7, 75.6, 60.6, 59.4, 55.4, 54.3, 53.9, 41.5, 29.9, 29.8, 29.4, 22.2, 21.6 ppm. Purity: >98% UPLCMS (210 nm); retention time 0.83 min; (M+1) 315

Provenance & Evidence