5,5-dimethyl-2,2-diphenyl-hex-3-ynoic acid

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: 5,5-dimethyl-2,2-diphenyl-hex-3-ynoic acid
• 英文别名: 5,5-Dimethyl-2,2-diphenyl-hex-3-insaeure；5,5-Dimethyl-2,2-diphenyl-3-hexynoic acid；5,5-dimethyl-2,2-diphenylhex-3-ynoic acid
• 化学式: C₂₀H₂₀O₂
• 分子量: 292.378
• InChiKey: KVWUPGYCYCUBEL-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5
• 重原子数：
  22
• 可旋转键数：
  5
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.25
• 拓扑面积：
  37.3
• 氢给体数：
  1
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  alkaline earth salt of/the/ methylsulfuric acid 在 乙醚 、 magnesium 作用下， 生成 5,5-dimethyl-2,2-diphenyl-hex-3-ynoic acid
  参考文献：
  名称：

  Concurrent activation of high- and low-level production processes in written composition

  摘要：

  Writing a text requires the coordination of multiple high-level composition processes in working memory, including planning, language generation, and reviewing, in addition to low-level motor transcription. Here, interference in reaction time (RT) for detecting auditory probes was used to measure the attentional demands of (1) copying in longhand a prepared text (transcription), (2) composing a text and pausing handwriting for longer than 250 msec (composition), and (3) composing and currently handwriting (transcription + composition). Greater interference in the transcription + composition condition than in the transcription condition implies that high-level processes are activated concurrently with motor execution, resulting in higher attentional demands. This difference was observed for adults who wrote in standard cursive, but not for children and not for adults who used an unpracticed uppercase script. Greater interference in the composition condition than in the transcription condition implies that high-level processes demand more attention than do motor processes. This difference was observed only when adults wrote with a practiced script. With motor execution being relatively automatic, adults were able to attend fully to the high-level processes required in mature, effective composition. One reason that children fail to engage in such high-level processes is that motor processes deplete available attention.

  DOI：

  10.3758/bf03194960