反应详情

A mixture of methyltriphenylphosphonium bromide/sodium amide (57.7 mg, 146 μmol) was combined with THF (5 mL) to give a yellow suspension and stirred for 1 h at RT. 2-(4-(3-(4-chlorophenyl)-1,2,4-thiadiazol-5-yl)piperazin-1-yl)-1-(4-methoxyphenyl)ethanone (50 mg, 117 μmol) dissolved in THF (3 mL) was added drop-wise via syringe over 5 min. The resulting orange suspension was stirred over night at RT. Water (10 mL) and EtOAc (10 mL) was added and stirred for 10 min. The aqueous layer was separated and extracted with EtOAc (1×10 mL). The organic layers were washed with brine (1×10 mL), dried over Na2SO4, filtered off and concentrated in vacuo. The residue was purified by column chromatography on silica eluting with a gradient formed from heptane and EtOAc to yield, after evaporation of the product containing fraction, 33 mg (66%) of the title compound as off-white solid. MS (m/e): 427.2 (MH+).

1. customto give a yellow suspension
2. additionwas added drop-wise via syringe over 5 min
3. stirringThe resulting orange suspension was stirred over night at RT
4. stirringstirred for 10 min
5. customThe aqueous layer was separated
6. extractionextracted with EtOAc (1×10 mL)
7. washThe organic layers were washed with brine (1×10 mL)
8. dry with materialdried over Na2SO4
9. filtrationfiltered off
10. concentrationconcentrated in vacuo
11. customThe residue was purified by column chromatography on silica eluting with a gradient
12. customformed from heptane and EtOAc
13. customto yield
14. customafter evaporation of the product
15. additioncontaining fraction, 33 mg (66%) of the title compound as off-white solid