反应详情

温度

115 °C

A neat solution of 8.50 g (22.5 mmol) of 3-(3-chloro-4-trifluoromethoxy-phenylamino)-propionic acid tert-butyl ester, 10.71 ml (112.6 mmol) of methyl bromoacetate and 13.07 ml (112.6 mmol) of 2,6-lutidine was stirred 14 h at 60° C., diluted with 30 ml of CH3CN and heated at 115° C. for 20 h. The reaction was then partitioned between aqueous 10% KHSO4 solution and EtOAc (3×). The organic phases were washed with aqueous 10% NaCl, dried over Na2SO4 evaporated and purified by flash silica gel column (n-heptane:EtOAc 95:5 to 85:1) to yield 5.94 g (64%) of the title compound as light yellow oil. MS: 412.11 (MH+, Cl).

1. customThe reaction was then partitioned between aqueous 10% KHSO4 solution and EtOAc (3×)
2. washThe organic phases were washed with aqueous 10% NaCl
3. dry with materialdried over Na2SO4
4. customevaporated
5. custompurified by flash silica gel column (n-heptane:EtOAc 95:5 to 85:1)