[EN] METHOD FOR INDUSTRIALLY PREPARING NITROGEN SUBSTITUTED AMINO-5,6,7,8-TETRAHYDRONAPHTHOL [FR] PROCÉDÉ POUR LA PRÉPARATION INDUSTRIELLE D'AMINO-5,6,7,8-TÉTRAHYDRONAPHTOL SUBSTITUÉ PAR AZOTE
METHOD FOR INDUSTRIALLY PREPARING NITROGEN SUBSTITUTED AMINO-5,6,7,8-TETRAHYDRONAPHTHOL
申请人:Meng Qingguo
公开号:US20140121380A1
公开(公告)日:2014-05-01
A method for industrially preparing a nitrogen substituted 6-amino-5,6,7,8-tetrahydronaphthol is disclosed. The method comprises includes reacting a nitrogen substituted amino-5,6,7,8-tetrahydronaphthol compound of formula (II) with a 2-substituted ethyl sulfonate compound of formula (III) under an alkaline condition and in the presence of a sulfite.