ethyl-(7-isopropyl-1-methyl-9-nitro-[3]phenanthryl)-ether | 651316-80-2

• 分子结构分类: 有机化合物 - 苯类化合物 - 菲及其衍生物
• 英文名称: ethyl-(7-isopropyl-1-methyl-9-nitro-[3]phenanthryl)-ether
• 英文别名: 9-Nitro-3-aethoxy-1-methyl-7-isopropyl-phenanthren；Aethyl-(7-isopropyl-1-methyl-9-nitro-[3]phenanthryl)-aether
• CAS: 651316-80-2
• 化学式: C₂₀H₂₁NO₃
• 分子量: 323.392
• InChiKey: KWHKGGQJZQKOPQ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.73
• 重原子数：
  24.0
• 可旋转键数：
  4.0
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.3
• 拓扑面积：
  52.37
• 氢给体数：
  0.0
• 氢受体数：
  3.0

反应信息

• 作为反应物：
  描述：

  ethyl-(7-isopropyl-1-methyl-9-nitro-[3]phenanthryl)-ether 、 硝酸 、 溶剂黄146 生成 ethyl-(7-isopropyl-1-methyl-4,9-dinitro-[3]phenanthryl)-ether
  参考文献：
  名称：

  Flood Disaster and Non-engineering Mitigation Measures in Dongting Lake in China

  摘要：

  Dongting Lake is one of the most difficult areas in China in terms of flood control. Flood disasters have been getting more and more serious since the 1900s. The causes of the flood disaster formation in Dongting Lake are discussed in this paper. The non-engineering disaster mitigation measures are explored correspondingly. By comparing flood disasters from different years in this area, the non-engineering measures are proved to be efficient efforts to mitigate flood disaster. Generally, these measures are: establishment of the advanced flood control forecast and decision-support system, which is the basis of the non-engineering disaster mitigation measures; scientific flood diversion, which is the essence of the non-engineering disaster mitigation measures; consummation of the mass-based flood control system working as the organizational guarantee for the non-engineering disaster mitigation measures; and relative laws and policies, which are the legal requirements. The establishment and consummation of these measures have played an important role in the flood disaster mitigation in Dongting Lake.

  DOI：

  10.1080/02508060108686903
• 作为产物：
  描述：

  3-Hydroxy-1-methyl-7-isopropyl-phenanthren 在 氢氧化钾 、 硝酸 、 溶剂黄146 作用下， 生成 ethyl-(7-isopropyl-1-methyl-9-nitro-[3]phenanthryl)-ether
  参考文献：
  名称：

  Karrman, Svensk Kemisk Tidskrift, 1945, vol. 57, p. 103,105

  摘要：

  DOI：

文献信息

• Groundwater Exploitation and Its Impact on the Environment in the North China Plain
  作者：Liu Changming、Yu Jingjie、Eloise Kendy

  DOI：10.1080/02508060108686913

  日期：2001.6

  The North China Plain (NCP) is one of China's most important social, economic, and agricultural regions. Currently, the Plain has 17,950 thousand ha of cultivated land, 71.1 percent of which is irrigated, consuming more than 70 percent of the total water supply. Increasing water demands associated with rapid urban and industrial development and expansion of irrigated land have led to overexploitation of both surface and the ratio of groundwater resources, particularly north of the Yellow River. In 1993, the ratio of groundwater exploitation to recharge in many parts of the NCP exceeded 1.0; in some areas, the ratio exceeded 1.5. Consequently, about 1.06 million ha of water-short irrigated areas in the NCP also have poor water quality. Persistent groundwater overexploitation in the northern parts of the NCP has resulted in water-level declines in both shallow and deep aquifers. According to data from 600 shallow groundwater observation wells in the Hebei Plain, the average depth to water increased from 7.23 m in 1983 to 11.52 m in 1993, indicating an average water-table decline of 0.425 m/year. Water table declines are not uniformly distributed throughout the area. Depletion rates are generally greatest beneath cities and intensively groundwater-irrigated areas. Water-table declines have also varied over time. With the continued decline of groundwater levels, large depression cones have formed both in unconfined and confined aquifers beneath the Hebei Plain. Groundwater depletion in the NCP has severely impacted the environment. Large tracts of land that overlie cones of depression have subsided, seawater has intruded into previously freshwater aquifers in coastal plains, and groundwater quality has deteriorated due to salinization, seawater intrusion, and untreated urban and industrial wastewater discharge. In order to balance groundwater exploitation with recharge, the major remedial measures suggested are to strengthen groundwater management, to raise water use efficiency, to adjust the water-consumed structure, and to increase water supply.