反应详情

To a stirred solution of ethyl 2-[3-chloro-4-[2-[[(1S,2R)-2-hydroxy-2-(4-hydroxyphenyl)-1-methylethyl]-amino]ethyl]phenoxy]-2-methylpropionate (170 mg) in ethyl acetate (7.8 ml) was added 4N hydrogen chloride in ethyl acetate solution (200 μl) at room temperature. After the solvent was removed under reduced pressure, diethyl ether was added to the residue, and collection of the insoluble material by filtration gave ethyl 2-[3-chloro-4-[2-[[(1S,2R)-2-hydroxy-2-(4-hydroxyphenyl)-1-methylethyl]amino]ethyl]phenoxy]-2-methylpropionate hydrochloride (175 mg).

1. customAfter the solvent was removed under reduced pressure, diethyl ether
2. additionwas added to the residue, and collection of the insoluble material by filtration