反应详情

DIAD (23.95 ml, 123 mmol) was added dropwise to a stirred solution of 1,1-dimethylethyl (2-hydroxyethyl)carbamate (18.05 g, 112 mmol), methyl 2-hydroxy-3-(methyloxy)benzoate (20.4 g, 112 mmol) and triphenylphosphine (32.3 g, 123 mmol) in THF (400 ml) with cooling in an ice/water bath. Stirred for 30 mins then evaporated and used without any purification. LC/MS showed essentially just product and triphenylphosphine oxide. Yield 98.9 g of crude material. MS (ES): C16H23NO6 requires 325; found 326 [M+H]+.

1. temperaturewith cooling in an ice/water bath
2. customthen evaporated
3. customused without any purification