Process for the preparation of benezenesulfonamides
申请人:Ciba-Geigy Corporation
公开号:US05220062A1
公开(公告)日:1993-06-15
There is disclosed a multi-step process for the preparation of benzenesulfonamides of general formula ##STR1## wherein R is 3,3-difluorobutyl or 3,3-difluorobuten-1-yl. The benzenesulfonamides obtainable by the process of the invention are intermediates for the synthesis of herbicidally active sulfonyl ureas.