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Synthesis of dibenzoxanthene and acridine derivatives catalyzed by 1,3-disulfonic acid imidazolium carboxylate ionic liquids

机译:1,3-二磺酸咪唑羧酸盐离子液体催化合成二苯并x吨和and啶衍生物

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摘要

New members of 1,3-disulfonic acid imidazolium carboxylate ionic liquids [DSIM][X] (where X = [CH3COO](-), [CCl3COO](-), [CF3COO](-)) were prepared and characterized by H-1 NMR, C-13 NMR, FT-IR, TGA, UV-vis and elemental analysis. The more acidic ILs [DISM][CCl3COO] and [DSIM][CF3COO] were efficiently utilized as recyclable catalysts for the preparation of 14H-dibenzo[a,j]xanthene and 1,8-dioxo-decahydroacridine derivatives in short times under solvent-free conditions at 80-100 degrees C with excellent yields. The above two ILs could be effectively utilized as catalysts for the synthesis of 1,8-dioxo-decahydroacridine in water at the same temperature.
机译:制备1,3-二磺酸咪唑羧酸盐离子液体的新成员[DSIM] [X](其中X = [CH3COO](-),[CCl3COO](-),[CF3COO](-)),并用H表征-1 NMR,C-13 NMR,FT-IR,TGA,UV-vis和元素分析。酸性更高的离子液体[DISM] [CCl3COO]和[DSIM] [CF3COO]被有效地用作可循环利用的催化剂,以在溶剂中短时间内制备14H-二苯并[a,j]氧杂蒽和1,8-二氧-十氢ac啶衍生物在80-100℃的无条件条件下具有出色的产率。上述两种IL可以有效地用作在相同温度下在水中合成1,8-二氧代-十氢hydro啶的催化剂。

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