申请人:Clariant GmbH
公开号:US06762315B1
公开(公告)日:2004-07-13
The invention relates to a method for producing [1,1′:4′,1″]-terphenyl compounds of the formula
which comprises reacting a metal aryl of the formula
with a boric ester at −80 to 40° C. in the presence of an inert solvent, converting the reaction product by hydrolysis into a boronic acid of the formula
reacting the boronic acid, a boronic anhydride obtainable from boronic acid by elimination of water, or a mixture of boronic acid and boronic anhydride, with an alcohol, and reacting the boronic ester formed thereby with a biphenyl compound of the formula
at 40 to 180° C. in the presence of a catalyst, of an acid-binding agent and of a polar solvent.
本发明涉及一种制备式为[1,1′:4′,1″]-三苯基化合物的方法,包括在惰性溶剂存在下,将式为金属芳基的化合物与硼酸酯在-80至40℃反应,通过水解将反应产物转化为式为硼酸的化合物,将硼酸、由硼酸通过水的消除得到的硼酸酐或硼酸和硼酸酐混合物与醇反应,然后在存在催化剂、酸中和剂和极性溶剂的条件下,将所形成的硼酸酯与式为联苯的化合物在40至180℃反应。