This invention relates to a process for producing a thiolsulfonic acid derivative of the general formula:
wherein each of R, and R2 is independently a lower alkyl group or a 5- or 6-membered cycloalkyl group, or alternatively R, and R2 together with the adjacent nitrogen atom form a 5- or 6-membered heterocyclic group which may further contain an oxygen, sulfur or nitrogen atom; and R3 is (1) an aryl group which may optionally be substituted by a lower alkyl group, a halogen, a lower alkoxy group or a lower alkylthio group, (2) a lower alkyl group which may optionally be substituted by a lower alkoxy group, (3) an aralkyl group or (4) a cycloalkyl group, or a salt thereof, which comprises reacting a compound of the general formula:
wherein R, and R2 are as defined above, or a salt thereof with a compound of the general formula:
wherein R3 is as defined above, or a salt thereof under an acid condition.
The compound (I) or a salt thereof is produced in high purity and in high yield according to the process of this invention.
本发明涉及一种生产通式为
硫醇
磺酸衍
生物的工艺:
其中R和R2各自独立地为低级烷基或5或6元环烷基,或者R和R2与相邻的氮原子一起形成5或6元杂环基团,该杂环基团可进一步含有氧原子、
硫原子或氮原子;和 R3 是(1)可任选被低级烷基、卤素、低级烷氧基或低级烷
硫基取代的芳基,(2)可任选被低级烷氧基取代的低级烷基,(3)芳烷基或(4)环烷基,或其盐,包括使通式化合物反应:
其中 R 和 R2 如上定义,或其盐与通式如下的化合物反应:
其中 R3 如上定义的化合物或其盐在酸性条件下反应。
根据本发明的工艺,可以生产出高纯度和高产率的化合物 (I) 或其盐。