- Epoxy ether cleaving reactions catalyzed by supporting Lewis acidic ionic liquid
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Lewis acidic ionic liquids were used to catalyze the reaction of epoxypropane with POCl3. Considering the lower cost and catalytic activities, we concluded that [Et3NH]Cl/AlCl3 was the most attractive ionic liquid from an economical point of view. But it would be easily inactivated because of sensitive to water and air. Moreover, it could not be reused easily because of difficulty recovery in the reaction. However, supporting [Et3NH]Cl/AlCl3 catalyst could resolve above problems. Supporting [Et3NH]Cl/AlCl3 catalyst could be separated by filter easily and reused 5 times in 98% yield. Furthermore, the catalyst was applicable to other epoxy ether cleaving reactions.
- Zhi, Hui Zhen,Shi, Hong Li,Hu, Yun,Xia, Ke Dan,Zhang, Peng,Yang, Jin Fei
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p. 1217 - 1220,4
(2020/09/16)
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- Preparation of phosphorus-containing propoxylation products by using aluminium trichloride
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The invention describes a process for preparing propoxylated, phosphorus-containing compounds using aluminium chloride catalyst.
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Page/Page column 3
(2008/12/07)
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- Preparation of tris-(chloropropyl) phosphate
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Producing acid-free tri(chloropropyl)phosphate (A) comprises reacting phosphoroxychloride with propylene oxides in the presence of heterogeneous metallic oxide catalysts (I), without additional water or alkali washing of the alkoxylation product containing phosphorus. Producing acid-free tri(chloropropyl)phosphate (A) comprises reacting phosphoroxychloride with propylene oxides in the presence of heterogeneous metallic oxide catalysts of formula ([(X) l 3+>((B 1>) nb+)]O m) (I), without additional water or alkali washing of the alkoxylation product containing phosphorus. X : Al, Ti or Zr; B 1>(non)metal e.g. Li, Na, K, Mg, Ca, Sr, Ba, Sc, Y, Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, B, Ga, In, Si, Ge, Sn, Pb, P, As, Sb or Bi; b : 1-6; and l, n, m : 0.0001-4. Provided that 2m is equal to the sum of 3l and nb.
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Page/Page column 4-5
(2008/06/13)
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