发明公开
EP0031645A3 Process for the production of azo compounds, and a new azo compound
失效
制备AZO化合物的方法和新的AZO化合物
- 专利标题： Process for the production of azo compounds, and a new azo compound
- 专利标题（中）： 制备AZO化合物的方法和新的AZO化合物
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申请号： EP80304149申请日： 1980-11-20
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公开(公告)号： EP0031645A3公开(公告)日： 1981-07-15
- 发明人: Whitmore, Martyn William , Pollard, Michael David , Smythe, Stephen Richard
- 申请人： FISONS plc
- 专利权人： FISONS plc
- 当前专利权人： FISONS plc
- 优先权： GB7943862 19791220
- 主分类号： C07C107/02
- IPC分类号： C07C107/02 ; C08F04/04 ; C07D231/18
摘要：
There is described a process for the production of a compound of formula I,
in which at least one each of Ri, R 2 and R 3 , and of R 4 , R 5 and R 6 , represents an electron withdrawing group, or one of R 1 , R 2 and R 3 together with one of R 4 , R 5 and R 6 form a -CO- group, and the remainder of Ri, R 2 , R 3 , R 4 , R 5 and R 6 , which may be the same or different, each represent an electron withdrawing group, alkyl, cycloalkyl, phenyl or phenylalkyl,
or R 1 and R 2 , or R 4 and R 5 , and R 1 and R 4 , may together form a -(CH 2 )n- chain, in which n is a whole number up to 5, the alkyl, cycloalkyl, phenyl or phenylalkyl group or the -(CH 2 ) n ,- chain optionally being substituted, which comprises reacting a compound of formula II,
in which Ria, R 2 a and R 3 a have the same significances as Ri, R 2 , and R 3 above, and some additional significances, with a compound of formula III,
in which R 4 a, R 5 a and R 6 a have the same significances as R 4 , R 5 and R 6 above, and some additional significances, the reaction being carried out in an aqueous medium in the presence of a base and a surfactant.
in which at least one each of Ri, R 2 and R 3 , and of R 4 , R 5 and R 6 , represents an electron withdrawing group, or one of R 1 , R 2 and R 3 together with one of R 4 , R 5 and R 6 form a -CO- group, and the remainder of Ri, R 2 , R 3 , R 4 , R 5 and R 6 , which may be the same or different, each represent an electron withdrawing group, alkyl, cycloalkyl, phenyl or phenylalkyl,
or R 1 and R 2 , or R 4 and R 5 , and R 1 and R 4 , may together form a -(CH 2 )n- chain, in which n is a whole number up to 5, the alkyl, cycloalkyl, phenyl or phenylalkyl group or the -(CH 2 ) n ,- chain optionally being substituted, which comprises reacting a compound of formula II,
in which Ria, R 2 a and R 3 a have the same significances as Ri, R 2 , and R 3 above, and some additional significances, with a compound of formula III,
in which R 4 a, R 5 a and R 6 a have the same significances as R 4 , R 5 and R 6 above, and some additional significances, the reaction being carried out in an aqueous medium in the presence of a base and a surfactant.
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