反应详情

A solution of 2.3 g (6.3 mmol) [[2-ethyl-1-(phenylmethyl)-1H-indol-4-yl]oxy]acetic acid tert-butyl ester and 4.8 g (12.6 mmol) bis(2,2,2-trichloroethyl)azodicarboxylate in diethyl ether was stirred for 24 hours at room temperature. The resulting solid was filtered and vacuum dried. This adduct (1 g, 1.3 mmol) was dissolved in 10 mL of THF and treated with zinc (1 g) and glacial acetic acid (0.5 mL). After stirring for 30 minutes at room temperature an excess of trimethylsilylisocyanate in 1 mL of THF was added stirring was continued at room temperature for 18 hours. The mixture was diluted with water and extracted with ethyl acetate. The organic layer was washed with brine, dried over MgSO4 and concentrated to dryness to give 0.385 g (69% yield) of the subtitled material. Mass spectrum: 423.

1. filtrationThe resulting solid was filtered
2. customvacuum dried
3. additionwas added
4. extractionextracted with ethyl acetate
5. washThe organic layer was washed with brine
6. dry with materialdried over MgSO4
7. concentrationconcentrated to dryness