Formic Acid → HCID 68551362, compound

Participants

Reaction Steps

To a 50 mL round bottomed flask, a mixture of formic acid (413 mg, 8.99 mmol) and N,N-dimethyl acetamide (30 mg, 0.09 mmol) was added to a stirred solution of chlorosulfonyl isocyanate (0.77 mL, 8.91 mmol) in dichloromethane (5 mL) at 42° C. The mixture was placed under reflux for 15 min and then cooled to ambient temperature. The resulting mixture was added to a stirred solution of 4-((1R,2S)-2-(tert-butyldimethylsilyloxy)-1-(5-(4-hydroxyphenyl)-1,3,4-oxadiazol-2-yl)propylamino)-2-chloro-3-methylbenzonitrile (346 mgs, 0.90 mmol) in N,N-dimethyl acetamide (6 mL) at ambient temperature. The mixture was then stirred for 17 h and then poured onto water (15 mL). Ethyl acetate (30 mL) was added to the mixture and the phases were partitioned. The organic phase was washed with water (12 mL) (×2), dried (Na2SO4) and concentrated to furnish a pale yellow oil (385 mg, yield not determined). 1H NMR (Acetone d6, 500 MHz) inter alia δ 8.07 (d, J=9 Hz, 2H), 7.53-7.47 (m, 3H), 6.84 (d, J=9 Hz, 2 H), 5.53 (d, J=9 Hz, 1 H), 5.22-5.17 (m, 1H), 4.77-4.68 (m, 1H), 2.37 (s, 3 H) and 1.46 (d, J=6 Hz, 3 H).

Provenance & Evidence