申请人:——
公开号:US20030149276A1
公开(公告)日:2003-08-07
A process for preparing
4
-thioalkylbromobenzene derivatives of the formula I
1
where:
R
1
is C
1
-C
6
-alkyl, C
1
-C
6
-haloalkyl, C
1
-C
6
-alkoxy, C
1
-C
6
-haloalkoxy, C
3
-C
8
-cycloalkyl, halogen,
R
2
is C
1
-C
6
-alkyl, C
1
-C
6
-alkoxy, C
3
-C
8
-cycloalkyl, C
2
-C
6
-alkenyl, cyano or a heterocyclic radical,
R
3
is C
1
-C
6
-alkyl,
which comprises reacting a compound of the formula II,
2
in which R
1
and R
2
are as defined above, with a dialkyl disulfide of the formula III
R
3
—S—S—R
3
III
in the presence of a nitrite and a catalyst in a suitable solvent is described.
一种制备公式I1中4-硫代烷基溴苯衍生物的方法,其中:
R1为C1-C6烷基,C1-C6卤代烷基,C1-C6烷氧基,C1-C6卤代烷氧基,C3-C8环烷基,卤素,
R2为C1-C6烷基,C1-C6烷氧基,C3-C8环烷基,C2-C6烯基,氰基或杂环基,
R3为C1-C6烷基,包括在合适溶剂中,在一种适当的催化剂和亚硝酸盐的存在下,将公式II中的化合物2与公式III中的二烷基二硫化物进行反应的方法。