The biologically important isothiocyanate sulforaphane (4-isothiocyanatobutyl methyl sulfoxide) was synthesized in six simple steps from commercially available 4-aminobutan-1-ol with an overall yield of 64%. The new synthetic method is suitable for multigram-scale preparation of sulforaphane and does not require expensive or toxic reagents. A novel one-pot procedure was also developed for preparing isothiocyanates through reaction of amines with O-phenyl chlorothioformate under mild conditions. Additionally, methyl pyrrolidine-1-carbodithioate was obtained as an unexpected byproduct, and this protocol was shown to be useful for the synthesis of S-aryl or S-heterocyclic thiocarbamates with cyclic side chains.

isothiocyanates - thiocarbamates - sulforaphane - antitumor agents

生物学上重要的异硫氰酸酯萝卜硫烷（4-异硫氰酸根合丁基甲基亚砜）是通过六个简单的步骤从市售的4-氨基丁烷-1-醇合成的，总收率为64％。新的合成方法适用于数克规模的萝卜硫烷制备，不需要昂贵或有毒的试剂。还开发了一种新颖的一锅法，该方法通过在温和条件下使胺与邻苯基氯硫代甲酸酯反应来制备异硫氰酸酯。另外，获得了作为未预料到的副产物的吡咯烷-1-碳二硫代甲基酯，并且表明该方案可用于合成具有环状侧链的S-芳基或S-杂环硫代氨基甲酸酯。

异硫氰酸酯-硫代氨基甲酸酯-萝卜硫烷-抗肿瘤药