http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Bakavoli, Mehdi,Rahimizadeh, Mohammad,Eshghi, Hossein,Shiri, Ali,Ebrahimpour, Zahra,Takjoo, Reza Korean Chemical Society 2010 Bulletin of the Korean Chemical Society Vol.31 No.4
A new and efficient reagent for the conversion of primary and secondary alcohols into their corresponding aldehydes and ketones is introduced. The reagent was easily prepared from the reaction of DBU with molecular bromine in $CHCl_3$. The structure of the reagent as $DBUH^+{Br_3}^-$ was determined by single crystal X-ray diffraction analysis.
Mehdi Bakavoli,Mohammad Rahimizadeh,Hossein Eshghi,Ali Shiri,Zahra Ebrahimpour,Reza Takjoo 대한화학회 2010 Bulletin of the Korean Chemical Society Vol.31 No.4
A new and efficient reagent for the conversion of primary and secondary alcohols into their corresponding aldehydes and ketones is introduced. The reagent was easily prepared from the reaction of DBU with molecular bromine in CHCl3. The structure of the reagent as DBUH+Br3– was determined by single crystal X-ray diffraction analysis.
Norouzi, Haniyeh,Davoodnia, Abolghasem,Bakavoli, Mehdi,Zeinali-Dastmalbaf, Mohsen,Tavakoli-Hoseini, Niloofar,Ebrahimi, Mahmoud Korean Chemical Society 2011 Bulletin of the Korean Chemical Society Vol.32 No.7
Alumina supported polyphosphoric acid (PPA/$Al_2O_3$) was successfully prepared by impregnation of alumina support by polyphosphoric acid and characterized using FT-IR spectroscopy, the $N_2$ adsorption/desorption analysis (BET), thermal analysis (TG/DTG), and X-ray diffraction (XRD) techniques. The catalytic behavior of this new solid acid supported heterogeneous catalyst was checked in the synthesis of 14-aryl-14H-dibenzo[a, j]xanthenes by cyclocondensation reaction of ${\beta}$-naphthol and aryl aldehydes under solvent-free conditions. The results showed that the novel catalyst has high activity and the desired products were obtained in very short reaction times with high yields. Moreover, the catalyst can be easily recovered by filtration and reused at least three times with only slight reduction in its catalytic activity.
Haniyeh Norouzi,Abolghasem Davoodnia,Mehdi Bakavoli,Mohsen Zeinali-Dastmalbaf,Niloofar Tavakoli-Hoseini,Mahmoud Ebrahimi 대한화학회 2011 Bulletin of the Korean Chemical Society Vol.32 No.7
Alumina supported polyphosphoric acid (PPA/Al_2O_3) was successfully prepared by impregnation of alumina support by polyphosphoric acid and characterized using FT-IR spectroscopy, the N_2 adsorption/desorption analysis (BET), thermal analysis (TG/DTG), and X-ray diffraction (XRD) techniques. The catalytic behavior of this new solid acid supported heterogeneous catalyst was checked in the synthesis of 14-aryl-14Hdibenzo[a, j]xanthenes by cyclocondensation reaction of β-naphthol and aryl aldehydes under solvent-free conditions. The results showed that the novel catalyst has high activity and the desired products were obtained in very short reaction times with high yields. Moreover, the catalyst can be easily recovered by filtration and reused at least three times with only slight reduction in its catalytic activity.