4.5-Dimethyl-hexin-(1)-ol-(4) | 19135-02-5

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 4.5-Dimethyl-hexin-(1)-ol-(4)
• 英文别名: 2,3-Dimethylhex-5-yn-3-ol
• CAS: 19135-02-5
• 化学式: C₈H₁₄O
• 分子量: 126.199
• InChiKey: RPHSEWGLCGRKKN-UHFFFAOYSA-N

物化性质

• 沸点：
  61 °C(Press: 12 Torr)
• 密度：
  0.886±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.7
• 重原子数：
  9
• 可旋转键数：
  2
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.75
• 拓扑面积：
  20.2
• 氢给体数：
  1
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  光气 、 4.5-Dimethyl-hexin-(1)-ol-(4) 在 甲苯 、 三甲胺 作用下， 生成 2,3-二甲基-5-己炔-3-基氨基甲酸酯
  参考文献：
  名称：

  The Prevalence of Daytime Napping and Its Relationship to Nighttime Sleep

  摘要：

  Many healthy adults report daytime napping. Surprisingly few studies, however have examined spontaneous napping behavior especially very short naps, in healthy adults. The authors examined the prevalence of power naps (lasting less than 20 minutes) and longer naps (20 minutes or more) and their effects on nighttime sleep in a group of healthy young and middle-aged adults. The young and middle-aged adults reported very similar sleep and napping patterns, with approximately 74% of the participants in both groups reporting they had napped during a 7-day sleep-log period. Almost half of the participants reported that the average nap lasted less than 20 minutes. A multivariant analysis of variance (MANOVA) found no significant differences between the no-nap and the power-nap or long-nap groups in sleep quantity or quality for either age group. The current data suggested that power napping occurs frequently in healthy adults and that spontaneous napping does not negatively affect nighttime sleep.

  DOI：

  10.1080/08964280109595773
• 作为产物：
  描述：

  3-溴丙炔 在 四氢呋喃 、 氢化铝 作用下， 生成 4.5-Dimethyl-hexin-(1)-ol-(4)
  参考文献：
  名称：

  The Prevalence of Daytime Napping and Its Relationship to Nighttime Sleep

  摘要：

  Many healthy adults report daytime napping. Surprisingly few studies, however have examined spontaneous napping behavior especially very short naps, in healthy adults. The authors examined the prevalence of power naps (lasting less than 20 minutes) and longer naps (20 minutes or more) and their effects on nighttime sleep in a group of healthy young and middle-aged adults. The young and middle-aged adults reported very similar sleep and napping patterns, with approximately 74% of the participants in both groups reporting they had napped during a 7-day sleep-log period. Almost half of the participants reported that the average nap lasted less than 20 minutes. A multivariant analysis of variance (MANOVA) found no significant differences between the no-nap and the power-nap or long-nap groups in sleep quantity or quality for either age group. The current data suggested that power napping occurs frequently in healthy adults and that spontaneous napping does not negatively affect nighttime sleep.

  DOI：

  10.1080/08964280109595773

文献信息

• <i>B</i>-Allenyl- and <i>B-</i>(γ-Trimethylsilylpropargyl)- 10-phenyl-9-borabicyclo[3.3.2]decanes:  Asymmetric Synthesis of Propargyl and α-Allenyl 3°-Carbinols from Ketones
  作者：Eliud Hernandez、Carlos H. Burgos、Eyleen Alicea、John A. Soderquist

  DOI：10.1021/ol061596j

  日期：2006.8.1

  Simple and efficient Grignard procedures are reported for the syntheses of B-allenyl-10-(phenyl)-9-borabicyclo[3.3.2]decane (1) and its B-(gamma-trimethylsilylpropargyl) counterpart (2) in both enantiomeric forms. Both add selectively to ketones, providing propargyl- and alpha-silylallenyl 3-degree-carbinols, respectively (i.e., 6 (61-93% ee) and 9 (64-98% ee)). The air-stable boron byproduct is efficiently

  据报道，简单有效的Grignard方法可合成两种对映体形式的B-烯基-10-（苯基）-9-环硼[3.3.2]癸烷（1）及其对应的B-（γ-三甲基甲硅烷基炔丙基）（2）。 。两者都选择性地添加到酮中，分别提供炔丙基和α-甲硅烷基烯丙基3-度羰基化合物（即6（61-93％ee）和9（64-98％ee））。空气稳定的硼副产物可有效回收并循环回1或2。9的臭氧分解和溴化分别提供非外消旋的α-羟基酸和γ-溴丙炔基甲醇。
• Ready Access to Benzannulated [5,5]-Oxaspirolactones Using Au(III)-Catalyzed Cascade Cyclizations
  作者：Yash Mankad、Sagar S. Thorat、Pronay Das、Gamidi Rama Krishna、Ravindar Kontham、D. Srinivasa Reddy

  DOI：10.1021/acs.joc.1c02843

  日期：2022.3.4

  showcases an unprecedented Au(III)-catalyzed cascade cyclization of 2-(4-hydroxyalkynyl)benzoates to access benzannulated [5,5]-oxaspirolactones related to biologically active natural products. This reaction proceeds through an initial 5-endo-dig mode of hydroalkoxylation of the alkynol segment to give the oxocarbenium species (via cyclic enol-ether) followed by the addition of carboxylate onto the oxocarbenium

  这项工作展示了史无前例的 Au(III) 催化的 2-(4-羟基炔基)苯甲酸酯的级联环化，以获得与生物活性天然产物相关的苯环 [5,5]-氧杂螺内酯。该反应通过炔醇链段的氢化烷氧基化的初始 5 - endo -dig 模式进行，以产生氧代碳鎓物质（通过环烯醇-醚），然后将羧酸盐添加到氧代碳鎓上，从而递送氧螺内酯支架。在测试该方法的范围时，我们发现羟基的空间位阻和电子环境可以改变通过羧酸盐对束缚炔烃的竞争性 6- endo -dig 攻击模式传递异色烯酮的反应途径。
• Gutmann et al., Helvetica Chimica Acta, 42<959>719,720,726
  作者：Gutmann et al.

  DOI：——

  日期：——