反应详情

To the above prepared (4-methyl-5-trimethylsilanylethynyl-thiazol-2-yl)-carbamic acid tert-butyl ester (0.592 g, 1.907 mmol), dissolved in 10 mL of MeOH, was added K2CO3 (0.395 g, 1.5 eq.)) and the mixture was stirred for 2 h at ambient temperature. Pouring onto crashed ice/NH4Cl, twofold extraction with ethyl acetate, washing with water and brine, drying over sodium sulfate, and evaporation to dryness, followed by flash chromatography (SiO2, hexane/ethyl acetate=4/1), produced 0.391 g of the title compound as light brown foam.

1. additionPouring
2. extractionice/NH4Cl, twofold extraction with ethyl acetate
3. washwashing with water and brine
4. dry with materialdrying over sodium sulfate, and evaporation to dryness