作者:Gundogdu, Ozlem、Atalay, Abdurrahman、Şahin, Ertan、Kara, Yunus
DOI:10.1016/j.molstruc.2024.138767
日期:——
Isoindole-1,3‑dione derivatives containing an epoxy alcohol unit were synthesized. Epoxy alcohols were converted to the corresponding 1,2,3-triacetate derivatives in a one-pot manner using the NaBH4/Ac20 system for the first time and in high yield. C-3 selective ring-opening products were obtained with good yield and with stereospecificity with the NaBH/AcO system at 139–140 °C. The exact configuration
合成了含有环氧醇单元的异吲哚-1,3-二酮衍生物。首次使用NaBH4/Ac2O体系以一锅法将环氧醇转化为相应的1,2,3-三乙酸酯衍生物,且产率较高。在 139-140 °C 的 NaBH/AcO 系统中,以良好的收率和立体特异性获得了 C-3 选择性开环产物。通过X射线衍射分析确定了2-甲基-1,3-二氧代八氢-1H-异吲哚-4,5,6-三基三乙酸酯的确切构型,该结构是由环氧醇与氢化物转移剂在乙酸酐中反应得到的。另一方面,进行了理论计算来解释环氧醇开环反应的区域选择性。结果表明,环氧醇的开环反应以热力学控制的方式进行,并且区域选择性的发生取决于产物的稳定性。