申请人:Clariant GmbH
公开号:US20030220516A1
公开(公告)日:2003-11-27
Compounds of the formula (I)
1
in which
Q
1
and Q
2
are each OH or form a trimeric boric anhydride,
Z is CHO, CH
2
Y, X or a protected aldehyde group, and X is CN, COOH, COCl, CONH
2
or C(OR)
3
, and Y is OH or NH
2
, and Z is in the o-, m- or p-position to the boronic acid radical,
are prepared by
a) reacting a compound of the formula (II)
2
with Mg in the presence of an anthracene compound and, if desired, a transition-metal halide and, if desired, an Mg halide or in the presence of a transition-metal halide and, if desired, an Mg halide, to give the corresponding arylmagnesium chloride,
b) reacting the latter with a borate of the formula B(OR′)
3
and hydrolyzing the product, with removal of the aldehyde protecting group,
c) and, if desired, oxidizing or reducing the free aldehyde group.
化学式(I)的化合物1中,其中Q1和Q2均为OH或形成三聚硼酸酐,Z为CHO、CH2Y、X或受保护的醛基团,X为CN、COOH、COCl、CONH2或C(OR)3,Y为OH或NH2,Z在硼酸基团的o-、m-或p-位置上,通过以下步骤制备:a) 在蒽化合物存在下,将化合物(II)2与Mg反应,如果需要,加入过渡金属卤化物和Mg卤化物,或在过渡金属卤化物存在下,如果需要,加入Mg卤化物,得到相应的芳基氯化镁;b) 将后者与化学式为B(OR′)3的硼酸酯反应,并水解产物,去除醛保护基团;c) 如果需要,氧化或还原自由醛基团。