(2-(diethylamino)-4-methyl-1,3,2l5-dioxaphosphinan-2-yl)copper(II) bromide | 473576-53-3

• 英文名称: (2-(diethylamino)-4-methyl-1,3,2l5-dioxaphosphinan-2-yl)copper(II) bromide
• CAS: 473576-53-3
• 化学式: C₈H₁₈BrCuNO₂P
• 分子量: 334.66
• InChiKey: XIQJDFCYKQSAKX-YJUVXMIUSA-M

计算性质

• 辛醇/水分配系数(LogP)：
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• 重原子数：
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• 可旋转键数：
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• 环数：
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• sp3杂化的碳原子比例：
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• 拓扑面积：
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• 氢给体数：
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• 氢受体数：
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反应信息

• 作为反应物：
  描述：

  tetrabutoxytitanium 、 (2-(diethylamino)-4-methyl-1,3,2l5-dioxaphosphinan-2-yl)copper(II) bromide 、 水 在 acetylacetone 作用下， 以 乙醇 、 水 、 苯 为溶剂， 生成
  参考文献：
  名称：

  摘要：

  The relationship of the structural organization and acid-base properties of the surface of phosphorus titanate oxides prepared from tetra-n-butoxytitanium and phosphorous esters with the catalytic activity and selectivity of these materials in ethylene glycol oxyethylation was studied. Single-phase phosphorus-containing oxides synthesized from 2-diethylamido-4-methyl-1,3,2-dioxophosphorinane and diphenyl(methano)phosphocane have strong surface aprotic acid sites and exhibit high catalytic activity with respect to oxyethylation and a record-breaking selectivity in the formation of the lower homolog, diethylene glycol. The last-mentioned fact is a consequence of the sieve effect exerted by the homogeneous porous structure of supermicropores (8-10 Angstrom) of the oxides. An increase in the concentration of the strong acid sites (greater than or equal to130 kJ mol(-1)) on the oxide surface enhances the catalytic activity. On the basis of the temperature programmed desorption of ammonia and CO2 and kinetic measurements, a concerted acid-base mechanism was proposed for the catalytic addition of ethylene oxide to ethylene glycol on the phosphorus-titanate surface.

  DOI：

  10.1023/a:1019601332563