Bis-<2,5-dimethoxy-phenyl>-sulfid | 93006-86-1

• 分子结构分类: 有机化合物 - 有机硫化合物 - 硫醚类
• 英文名称: Bis-<2,5-dimethoxy-phenyl>-sulfid
• 英文别名: bis-(2,5-dimethoxy-phenyl)-sulfide；2.5.2'.5'-Tetramethoxy-diphenylsulfid；Bis-(2,5-dimethoxy-phenyl)-sulfid；2-(2,5-Dimethoxyphenyl)sulfanyl-1,4-dimethoxybenzene
• CAS: 93006-86-1
• 化学式: C₁₆H₁₈O₄S
• 分子量: 306.383
• InChiKey: KUASYSLNARUSJR-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.9
• 重原子数：
  21
• 可旋转键数：
  6
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.25
• 拓扑面积：
  62.2
• 氢给体数：
  0
• 氢受体数：
  5

反应信息

• 作为产物：
  描述：

  对苯二甲醚 在 二硫化碳 、 三氯化铝 、 二氧化硫 作用下， 生成 Bis-<2,5-dimethoxy-phenyl>-sulfid
  参考文献：
  名称：

  Impact of Ambulance Diversion Policies in Urban, Suburban, and Rural Areas of Central Maryland

  摘要：

  Abstract. As a method to control patient flow to overburdened hospitals, effective emergency medical services (EMS) systems provide policies for ambulance diversion. The Maryland state EMS system supports two types of alert for general hospital use: red alert, aimed at limiting the delivery of patients who may require intensive care unit (ICU) admission, and yellow alert, aimed at preventing further overload of already overtaxed emergency departments (EDs). Objective: To examine the effect of those alert policies in different geographical environments, urban, suburban, and rural. Methods: Alert data for 23 hospitals in Central Maryland and ambulance arrival data for approximately 138,000 ambulance calls during calendar year 1996 were combined and analyzed. The impacts of diversion practices in the geographic areas were compared. Results: Red alert reduced volume in all patient acuity levels in all geographic areas by a statistically significant 0.4 patient/hr. Yellow alert diverted low‐acuity patients at the rate of 0.13 patient/hr (p < 0.001) in urban areas and at the rate of 0.16 patient/hr (p < 0.001) in suburban areas, but had minimal impact in the flow of patients in the rural environment. Conclusions: The ED diversion policy has some limited effect in preventing further patient volume in urban and suburban areas, but has virtually no impact in rural areas. However, an ICU diversion policy diverts patients of all acuities uniformly and inordinately diverts patients not likely to require ICU admissions while having only minimal impact on patients who do require ICU resources. The impact of red alert is uniform in all geographic areas. The impact and efficacy of ambulance diversion policies should be evaluated to ensure they are having the intended effect. While perhaps initially effective, the impact of alert policies may change over time.

  DOI：

  10.1111/j.1553-2712.2001.tb00546.x

文献信息

• Process for preparing polyarylene thioethers
  申请人：SEISAN KAIHATSU KAGAKU KENKYUSHO

  公开号：EP0440106A2

  公开（公告）日：1991-08-07

  Polyarylene thioethers are easily prepared by an oxidative polymerization of an aromatic compound of the formula (I) wherein R¹, R², R³ and R⁴ are each independently a hydrogen atom, a halogen atom, a lower alkyl group or a lower alkoxy group, and Y is a hydrogen atom or a group of the formula (II) wherein R⁵, R⁶, R⁷ and R⁸ are each independently a hydrogen atom, a halogen atom, a lower alkyl group or a lower alkoxy group and X is -O-, -S-, a methylene group or an ethylene group with a sulfidizing agent in the presence of an acid and an oxidizing agent, or in the presence of an acid, a catalyst for oxidative polymerization and oxygen, or in the presence of a Friedel-Crafts catalyst.

  通过式 (I) 的芳香族化合物的氧化聚合可轻松制备聚芳硫醚，式 (I) 中 R¹、R²、R³ 和 R⁴ 各自独立地为氢原子、卤素原子、低级烷基或低级烷氧基，Y 为氢原子或式 (II) 的基团，式 (II) 中 R⁵、R⁶、 R⁵、R⁶、R⁷ 和 R⁸ 各自独立地为氢原子、卤素原子、低级烷基或低级烷氧基，X 为-O-、-S-、亚甲基或亚乙基，在有酸和氧化剂存在下，或在有酸、氧化聚合催化剂和氧存在下，或在有 Friedel-Crafts 催化剂存在下，加入硫化剂。
• US5250657A
  申请人：——

  公开号：US5250657A

  公开（公告）日：1993-10-05