The present invention is directed to the preparation of phthalic anhydride compounds and the intermediate phthalide compounds. In particular, the invention is directed to an improved bio-based route from furanic compounds to phthalic anhydride compounds by reacting furfuryl alcohol (i.e. 2-hydroxymethylfuran) or an analogue thereof having a nucleophilic atom on the 2-methyl, with a dienophile comprising an α,β-unsaturated carbonyl comprising an α'-leaving group. The inventions further involved preparation of phthalic anhydride compounds, phthalic acid compounds and reduction products of the intermediate phthalide compounds.
本发明涉及
邻苯二甲酸酐化合物和中间
苯酞化合物的制备。具体来说,本发明涉及一种改进的基于
生物的途径,从
呋喃化合物到
邻苯二甲酸酐化合物的制备方法,通过将
呋喃基醇(即2-羟甲基
呋喃)或具有2-甲基上带有亲核原子的类似物与含有α,β-不饱和羰基和α'-脱离基团的双烯组分反应。该发明还涉及
邻苯二甲酸酐化合物、
邻苯二甲酸化合物以及中间
苯酞化合物的还原产物的制备。