The present invention involves process for the preparation of compounds having the chemical structure:
wherein Ar-H is an aromatic compound which is activated to an electrophilic attack, and wherein -Y is an aliphatic group having a labile moiety, especially where the labile moiety is a terminally unsaturated moiety: -C≡CH, - c =CH2,
or aldehydes in the form of their acetals. The process comprises the step of reactinct Ar-H and
wherein -X is -Cl or -Br, and where the reaction step is carried out in a solvent medium at a temperature of from about -40°C to about -100°C using stannic chloride as a catalyst.
本发明涉及制备具有以下
化学结构的化合物的工艺: 其中 Ar-H 是一种芳香族化合物,可被亲电攻击活化,而 -Y 是一种脂肪族基团,具有一个易受攻击的基团,特别是易受攻击的基团是一种末端不饱和基团:-C≡CH,-c =
CH2,或以其
乙醛形式存在的醛。 该工艺包括反应 Ar-H 的步骤,其中 -X 为 -Cl 或 -Br,反应步骤在溶剂介质中进行,使用
氯化锡作为催化剂,温度为约 -40°C 至约 -100°C。