反应详情

3 g of N-methylmorpholine and 4 g of isobutyl chloroformate were successively added dropwise to 5 g of 2-benzyloxyacetic acid in 50 ml of THF at −10° C. The mixture was stirred for 10 minutes and then 5 ml of di-n-butylamine and a further 3 g of N-methylmorpholine were added. After one hour, the mixture was added to 500 ml of water and extracted several times with ether. The collected organic phases were dried over magnesium sulfate and, after removal of the solvent by distillation, 7 g of an oil were isolated and were immediately employed further.

1. waitAfter one hour
2. extractionextracted several times with ether
3. dry with materialThe collected organic phases were dried over magnesium sulfate
4. customafter removal of the solvent
5. distillationby distillation