申请人:Nederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek TNO
公开号:US11384095B2
公开(公告)日:2022-07-12
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体邻苯二甲酸化合物的制备。特别是,本发明涉及一种从呋喃化合物到邻苯二甲酸酐化合物的改进的生物基路线,其方法是使糠醇(即 2-羟甲基呋喃)或其在 2-甲基上具有亲核原子的类似物与包含一个α,β-不饱和羰基的亲二烯反应,该羰基包含一个α′-离去基团。这些发明还涉及邻苯二甲酸酐化合物、邻苯二甲酸化合物和中间邻苯二甲酸化合物还原产物的制备。