申请人:Giordano Claudio
公开号:US20060264640A1
公开(公告)日:2006-11-23
A method is described for the preparation of aryl-pyridine compounds of formula (I) by cross-coupling reaction, promoted by catalytic systems based on palladium or nickel between compounds of formula (II) and (III) in which:—Met represents Mg or Zn,—Y represents Cl, Br, I or acetoxy,—Z represents I, Br, Cl, triflate, sulphonate, phosphate,—R
1
, R
2
, R
3
, R
4
, which are the same as one another or different, represent hydrogen, a linear and/or branched C
1
-C
4
alkyl, and/or an aryl, and/or a heteroaryl, or R
1
and R
2
and/or R
3
and R
4
, taken together, form a C
3
-C
8
ring, an aryl and/or a heteroaryl,—A represents —COR
5
where R
5
represents hydrogen, a linear and/or branched C
1
-C
4
alkyl, and/or an aryl, and/or a heteroaryl, or—A represents —CR
s5
(OR
6
)(OR
7
) where R
5
has the meaning described above and R
6
and R
7
, which are the same as one another or different, represent a linear and/or branched C
1
-C
4
alkyl, and/or an aryl, and/or a heteroaryl, or R
6
and R
7
, joined together, represent a C
1
-C
8
alkyl or alkenyl.
描述了一种通过钯或镍基催化系统促进的交叉偶联反应来制备式(I)芳基吡啶化合物的方法,其中化合物的式(II)和(III)之间的化合物,在其中:—Met代表Mg或Zn,—Y代表Cl、Br、I或乙酰氧基,—Z代表I、Br、Cl、三氟甲烷磺酸盐、磷酸盐,—R1、R2、R3、R4,它们彼此相同或不同,代表氢、线性和/或支链C1-C4烷基,和/或芳基,和/或杂环烷基,或R1和R2和/或R3和R4,共同形成C3-C8环,一个芳基和/或杂环烷基,—A代表—COR5,其中R5代表氢、线性和/或支链C1-C4烷基,和/或芳基,和/或杂环烷基,或—A代表—CRs5(OR6)(OR7),其中R5具有上述描述的含义,R6和R7,它们彼此相同或不同,代表线性和/或支链C1-C4烷基,和/或芳基,和/或杂环烷基,或R6和R7,连接在一起,代表C1-C8烷基或烯烃。