2-{4-(3-butoxy-2-hydroxypropoxy)phenylcarbamoyl}ethyldimethylsulfonium p-toluenesulfonate 、
sodium 2,4,6-trinitrobenzene-1-sulfonate 在
乙醇 、
2-{4-(3-butoxy-2-hydroxypropoxy)phenylcarbamoyl}ethyldimethylsulfonium picrylsulfonate 作用下,
以
水 为溶剂,
以giving 6.50 g of 2-{4-(3-butoxy-2-hydroxypropoxy)phenylcarbamoyl}ethyldimethylsulfonium picrylsulfonate (Compound 15) in 93.5% yield, M.P. 106° to 108° C.的产率得到2-{4-(3-butoxy-2-hydroxypropoxy)phenylcarbamoyl}ethyldimethylsulfonium picrylsulfonate