tert-Butanol → HCID 69926284, compound

Participants

Reaction Steps

To a solution of 1.90 g (6.88 mmol) 2-methylsulfanyl-4-o-tolyloxy-pyrimidine-5-carboxylic acid, 0.95 ml triethylamine (6.88 mmol) and 1.29 ml (1.37 mmol) t-butanol in 25 ml THF, 1.47 ml (6.88 mmol) diphenylphosphorylazide were added and the resulting solution heated at reflux for 12 hrs. After evaporation of the solvent, the residue was distributed between CH2Cl2 and H2O. The aquoeus phase was extracted twice with 80 ml CH2Cl2. The combined organic layers were dried (Na2SO4), filtered and evaporated. The residue was purified by chromatography (SiO2, CH2Cl2, ethyl acetate 40:1) to give 1.70 g (71%) (2-methylsulfanyl-4-o-tolyloxy-pyrimidin-5-yl)-carbamic acid tert.-butyl ester as a colorless solid, MS (ISP): 348.2 (M+H)+.

Provenance & Evidence