作者:Ayşe TAN、Mustafa Zahrittin KAZANCIOĞLU、Derya AKTAŞ、Özlem GÜNDOĞDU、Ertan ŞAHİN、Nurhan HORASAN KİSHALI、Yusuf KARA
DOI:10.3906/kim-1310-30
日期:——
Three new polysubstituted isoindole-1,3-diones were prepared from 2-ethyl-5-hydroxy-3a,4,5,7a-tetrahydro-isoindole-1,3-dione. The reaction of 2-ethyl-5-hydroxy-3a,4,5,7a-tetrahydro-isoindole-1,3-dione with m-CPBA gave the corresponding epoxide. The triacetate derivative was obtained via cis-hydroxylation using OsO_4, followed by acetylation. An aromatic derivative, a secondary reaction product, was also formed during the acetylation. Finally, a tricyclic derivative from 2-ethyl-5-hydroxy-3a,4,5,7a-tetrahydro-isoindole-1,3-dione was synthesized via dichloroketene addition under microwave irradiation. The exact structures of epoxide and tricyclic derivatives were determined by X-ray diffraction analysis.
从2-乙基-5-羟基-3a,4,5,7a-四氢异吲哚-1,3-二酮出发,制备了三种新的多取代异吲哚-1,3-二酮。2-乙基-5-羟基-3a,4,5,7a-四氢异吲哚-1,3-二酮与m-CPBA反应得到相应的环氧化物。通过使用OsO_4进行顺式羟基化,随后进行乙酰化,得到了三乙酸酯衍生物。在乙酰化过程中,还形成了一种芳香族衍生物,即二次反应产物。最后,在微波辐射下通过二氯乙烯酮加成,从2-乙基-5-羟基-3a,4,5,7a-四氢异吲哚-1,3-二酮合成了一个三环衍生物。通过X射线衍射分析确定了环氧化物和三环衍生物的确切结构。