建立了一种简单、实用的光诱导一锅法高选择性N-甲基喹喔啉酮类化合物和苯乙酮类化合物合成一系列3-烷基化喹唑啉-2(1H)-酮类化合物的方法。该方法在室温条件下,以玫瑰红作为光催化剂,在18 W 460 nm的蓝色LED下照射8 h,通过直接C3-H活...建立了一种简单、实用的光诱导一锅法高选择性N-甲基喹喔啉酮类化合物和苯乙酮类化合物合成一系列3-烷基化喹唑啉-2(1H)-酮类化合物的方法。该方法在室温条件下,以玫瑰红作为光催化剂,在18 W 460 nm的蓝色LED下照射8 h,通过直接C3-H活化的方案,较好收率获得一系列相应的3-烷基化喹喔啉-2(1H)-酮类化合物,最高产率可达到76%。反应体系具有经济实用性和底物适用范围广的特点,为3-烷基化喹喔啉-2(1H)-酮类化合物类化合物的合成提供了一种简便经济的方法。展开更多
Both whisker and nanometer MgSO4·5Mg(OH)2·3H2O(MOS) were prepared by hydrothermal method at 140℃for different times, using NaOH and MgSO4·7H2O as raw materials. The MgSO4·5Mg(OH)2·3H2O part i...Both whisker and nanometer MgSO4·5Mg(OH)2·3H2O(MOS) were prepared by hydrothermal method at 140℃for different times, using NaOH and MgSO4·7H2O as raw materials. The MgSO4·5Mg(OH)2·3H2O part icles were characterized by powder X ray diffraction(XRD),thermal analysis(TGA DSC), infrared spectroscopy(FT IR),transmission electron microscopy(SEM) and scanning electron microscopy(TEM). The size distribution in whisker like and nanocrystalline materials arein the range of 10～50μm and 10～20nm respectively. The whisker MOS is metastable phase in MgSO4 NaOH H2O system at 140℃,whereas nanometer MOS is stable phase.展开更多
文摘建立了一种简单、实用的光诱导一锅法高选择性N-甲基喹喔啉酮类化合物和苯乙酮类化合物合成一系列3-烷基化喹唑啉-2(1H)-酮类化合物的方法。该方法在室温条件下,以玫瑰红作为光催化剂,在18 W 460 nm的蓝色LED下照射8 h,通过直接C3-H活化的方案,较好收率获得一系列相应的3-烷基化喹喔啉-2(1H)-酮类化合物,最高产率可达到76%。反应体系具有经济实用性和底物适用范围广的特点,为3-烷基化喹喔啉-2(1H)-酮类化合物类化合物的合成提供了一种简便经济的方法。
文摘Both whisker and nanometer MgSO4·5Mg(OH)2·3H2O(MOS) were prepared by hydrothermal method at 140℃for different times, using NaOH and MgSO4·7H2O as raw materials. The MgSO4·5Mg(OH)2·3H2O part icles were characterized by powder X ray diffraction(XRD),thermal analysis(TGA DSC), infrared spectroscopy(FT IR),transmission electron microscopy(SEM) and scanning electron microscopy(TEM). The size distribution in whisker like and nanocrystalline materials arein the range of 10～50μm and 10～20nm respectively. The whisker MOS is metastable phase in MgSO4 NaOH H2O system at 140℃,whereas nanometer MOS is stable phase.
