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本文报道了芳香烃经羰化反应合成芳香羧酸或酯。反应表明,芳香饱和烃羰化往往发生在苯核的母体上;芳香不饱和烃羰化则发生在苯核支链的不饱和键上,而生成比原来增加一个或两个碳原子的芳香羧酸或酯。同时,讨论了反应温度、催化剂(AlCl_3)浓度、不同的酸对甲基羰化反应的影响,得出了在20～30℃反应温度下, AlCl_3/甲苯≤0.5(摩)较好,采用的溶剂以H_2SO_4、CH_3COOH为好。不同Pd化合物催化剂对苯乙烯羰化,可生成苯丙酸(酯)或肉桂酸(酯);不同的催化剂和溶剂对二苯炔的羰化反应可生成肉桂酸(酯)或苯基烯酮等。
This paper reports the aromatic carbonylation of aromatics to aryl carboxylic acids or esters. The reaction shows that the aromatic carbonylation of saturated hydrocarbons often occurs in the precursor of benzene nucleus; aromatic unsaturated carbonylation occurs on the benzene branch of the unsaturated bond, and to generate an increase than the original one or two carbon atoms of aromatic carboxyl Acid or ester. At the same time, the effects of reaction temperature, catalyst (AlCl 3) concentration and different acids on the reaction of methyl carbonylation were discussed. It was found that AlCl 3 / toluene ≤0.5 Solvent to H_2SO_4, CH_3COOH as well. Carbonylation of styrene with different Pd compounds can produce phenylpropionate or cinnamic acid. Different catalysts and solvents can catalyze the carbonylation of diphenylacetylene to form cinnamic acid esters or phenyl-enones Wait.