Synthesis and X-ray structure of stable 2H-isoindoles
作者:Takashi Murashima、Ryuji Tamai、Keiji Nishi、Kentaroh Nomura、Ken-ichi Fujita、Hidemitsu Uno、Noboru Ono
DOI:10.1039/a908641b
日期:——
Stable 2H-isoindoles with electron-withdrawing groups were prepared using the reaction of dinitrobenzene derivatives with isocyanoacetate in the presence of DBU. The use of acetonitrile as the solvent or a phosphazene base (BTPP) as a non-ionic base improved the yields. The structure was confirmed by X-ray crystallographic analysis of the compound 2e′. According to the X-ray analysis, this substance existed in the solid phase only as the 2H-isomer.
利用二硝基苯衍生物与异氰基乙酸酯在 DBU 存在下发生的反应,制备出了具有抽电子基团的稳定 2H-异吲哚。使用乙腈作为溶剂或使用磷苯碱(BTPP)作为非离子碱提高了产率。化合物 2e′ 的 X 射线晶体分析证实了其结构。根据 X 射线分析,这种物质在固相中只存在 2H 异构体。