Isobutylamine → HCID 9861386, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 2-methyl-4-nitrophenyl isothiocyanate (0.190 g, 1.0 mmol) in DMF (5.3 mL) was added isobutylamine (0.4 M solution in DMF, 5.3 mL) and the reaction mixture was allowed to stir for 4 h at which time TLC analysis (hexane:EtOAc 3:1) indicated consumption of the isothiocyanate. To the resulting mixture was added chloroacetic acid (0.8 M solution in DMF, 4.0 mL) followed by N-methylmorpholine (0.7 mL, 6.4 mmol). The reaction mixture was stirred at 80° C. for 18 h, then was partitioned between water (10 mL) and EtOAc (25 mL). The aqueous phase was back-extracted with EtOAc (2×10 mL). The combined organic layers were washed with a saturated NaCl solution (25 mL), dried (Na2SO4) and concentrated under reduced pressure. The resulting residue was purified by MPLC (Biotage 40 S silica gel column, gradient from 5% EtOAc/hex to 33% EtOAc/hex) to afford 2-(2-methyl-4-nitrophenylimino)-3-isobutyl-1,3-thiazolidin-4-one as a pale yellow oil (0.52 g, 85%).

Provenance & Evidence