Water → HCID 18991509, compound

Participants

Reaction Steps

7.5 g (23.6 mmol) of ethyl 6-ethoxycarbonylmethoxy-2-formylamino-3-hydroxy-4-methylene-hexanoate are dissolved in 75 ml of CH2Cl2 and 2.2 ml (28.3 mmol) of thionyl bromide are then added dropwise at room temperature to this solution. After 1 hour 50 ml of water are added and the reaction mixture is stirred vigorously for 10 minutes. The organic phase is separated and washed once with water, once with a 1N solution of KHCO3 and once with brine. The aqueous phases are extracted twice with CH2Cl2. The combined organic phases are dried over Na2SO4, filtered, and concentrated by evaporation giving ethyl 4-bromomethyl-6-ethoxycarbonylmethoxy-2-formylamino-3-hydroxy-hexanoate as a yellow oil which is further reacted without purification.

Provenance & Evidence