反应详情

温度

0 °C

4.1 g of (4-hexahydro-azepin-1-yl-benzenesulphonyl) chloride then 12 cm3 of acetone are added to a solution of 1.4 g of 3-hydroxy-4-amino butanoic acid and 3.36 g of 1,4-diazabicyclo [2.2.2]octane (DABCO) in 18 cm3 of water. Agitation is carried out for 6 hours at ambient temperature, the acetone is evaporated off, the residue is cooled down to 0° C. and 7.5 cm3 of 2N hydrochloric acid is added. Extraction is carried out with chloroform, the extracts are dried and evaporated to dryness. 6.3 g of desired product is obtained, used as it is for the following stage.

1. customthe acetone is evaporated off
2. addition7.5 cm3 of 2N hydrochloric acid is added
3. extractionExtraction
4. customthe extracts are dried
5. customevaporated to dryness