反应详情

1-Benzyloxy-3-[3-chloro-4-(3-nitropropyl)phenylthio]benzene (8) is dissolved in an organic solvent, such as acetonitrile and tetrahydrofuran. While the mixture is chilled in an ice bath, a formaldehyde solution is added and the reaction is allowed to proceed at 0 to 60° C. for 1 to 3 hours in the presence of a base, such as 1,8-diazabicyclo[5.4.0]undeca-7-ene, 1,5-diazabicyclo[4.3.0]non-5-ene, diazabicyclo[2.2.2]octane, trialkylamine, sodium hydroxide and potassium hydroxide. Subsequently, the product is treated to give 2-[2-[4-(3-benzyloxyphenylthio)-2-chlorophenyl]ethyl]-2-nitro-1,3-propanediol (9) or a hydrate thereof.

1. temperatureWhile the mixture is chilled in an ice bath
2. additionSubsequently, the product is treated