[EN] PROCESS AND INTERMEDIATES FOR THE PREPARATION OF PYROXASULFONE<br/>[FR] PROCÉDÉ ET INTERMÉDIAIRES POUR LA PRÉPARATION DE PYROXASULFONE
申请人:ADAMA AGAN LTD
公开号:WO2021019537A1
公开(公告)日:2021-02-04
The invention provides a process which comprises the step of thiomethylating a pyrazole, to create R2-C(O)-S-CH2- functionality at position 4 of the pyrazole ring. The process is useful in preparing Pyroxasulfone. The invention also provides intermediates. Formula (III);