17606-31-4Relevant articles and documents
Novel process for producing thiolsulfonic acid derivatives
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, (2008/06/13)
This invention relates to a process for producing a thiolsulfonic acid derivative of the general formula: STR1 wherein each of R1 and R2 is independently a lower alkyl group or a 5- or 6-membered cycloalkyl group, or alternatively R1 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: STR2 wherein R1 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.