The present invention provides a process for producing an aromatic unsaturated compound of the formula (4)
wherein Ar represents an optionally substituted aromatic group or an optionally substituted heteroaromatic group, and Y represents an electron withdrawing group,
which comprises reacting
(a) a compound of the formula (1)
Ar—H (1)
wherein Ar has the same meaning as defined above with
(b) a compound of the formula (2)
wherein Y has the same meaning as defined above, and Z represents a lower alkoxy, or
a compound of the formula (3)
wherein Y and Z have the same meanings as defined above, in the presence of
(c) an acid or a compound which generates a mineral acid by its hydrolysis.
本发明提供了一种制备公式(4)的芳香不饱和化合物的方法,其中Ar代表可选择取代的芳香基团或可选择取代的杂环芳香基团,Y代表电子提取基团,包括以下步骤:(a)将公式(1)的化合物Ar-H(1)与(b)公式(2)的化合物反应,其中Y具有与上述定义相同的含义,Z代表低级烷
氧基,或公式(3)的化合物,其中Y和Z具有与上述定义相同的含义,在(c)酸或通过其
水解生成矿酸的化合物的存在下。