2,4-Diphenyl-5,6-dihydrocyclopenta pyrylium perchlorate | 21016-30-8

• 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: 2,4-Diphenyl-5,6-dihydrocyclopenta pyrylium perchlorate
• 英文别名: 2,4-Diphenylcyclopenteno<1,2-b>pyrylium Perchlorate；2,4-Diphenylcyclopenta<1,2:b>pyrylium perchlorate；6,7-dihydro-2,4-diphenyl-5H-cyclopenta[b]pyrylium perchlorate；2,4-diphenyl-6,7-dihydro-5H-cyclopenta[b]pyranylium; perchlorate；2,4-Diphenyl-6,7-dihydro-5H-cyclopenta[b]pyranylium; Perchlorat；2,4-Diphenyl-5,6-dihydrocyclopenta[b]pyrylium perchlorate；2,4-diphenyl-6,7-dihydro-5H-cyclopenta[b]pyran-1-ium;perchlorate
• CAS: 21016-30-8
• 化学式: C₂₀H₁₇O*ClO₄
• 分子量: 372.805
• InChiKey: SHVXENPLXDCCEH-UHFFFAOYSA-M

计算性质

• 辛醇/水分配系数(LogP)：
  0.63
• 重原子数：
  26
• 可旋转键数：
  2
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.15
• 拓扑面积：
  75.3
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  2,4-Diphenyl-5,6-dihydrocyclopenta pyrylium perchlorate 在 吡啶 作用下， 以 乙酸酐 为溶剂， 反应 0.41h， 生成 3-Ethyl-2-<2-(2,4-diphenyl-5,6-dihydrocyclopentapyran-7-yl)vinyl>-benzothiazolium Perchlorate
  参考文献：
  名称：

  Pyrylocyanines. 14. Unsymmetrical pyrylocyanines based on 2,3-polymethylene-4,6-diphenylpyrylium salts

  摘要：

  DOI：

  10.1007/bf00503524
• 作为产物：
  描述：

  2-(3-氧代-1,3-二苯基丙基)环戊烷-1-酮 在 高氯酸 、 乙醚 、 乙酸酐 作用下， 生成 2,4-Diphenyl-5,6-dihydrocyclopenta pyrylium perchlorate
  参考文献：
  名称：

  Cohesion in science lesson discourse: clarity, relevance and sufficient information

  摘要：

  This paper discusses linguistics in the teaching of science, specifically the key linguistic processes through which students learn, rather than the mechanics of classroom interaction. Integrated datasets from The Classroom Learning Project contain transcripts of videotaped lessons spliced with teacher and student interviews and annotated with a researcher's comments. To illustrate the role of language in determining the effectiveness of teaching and learning, an integrated data set for one Australian Year 9 (14 year old students) science lesson on 'Fibres and Fabrics' was analysed in terms of coherence and comprehension. The analysis demonstrates the importance of communication skills in the classroom and the value of language analysis in determining the effectiveness of teacher's instructions. This paper argues the need for teachers to consider the importance of learning as a linguistic milieu especially when teaching science in context. When teaching and learning in contextually, competent communication must include adequate, genuine, clear and relevant amounts of information.

  DOI：

  10.1080/09500690010025076

文献信息

• 一种近红外有机发光材料的制备方法
  申请人：宋宝驹

  公开号：CN104164230B

  公开（公告）日：2017-02-08

  本发明公开了一种新型近红外有机发光材料的制备方法，步骤如下：A.将2‑甲基环己酮或环己酮或环戊桐、苯丙烯酰苯、固体氢氧化钾和苄基三乙基氯化铵，室温搅拌制得化学通式4；B.将化学通式4与R1‑CHO混合制的化学通式6，或将化合物4a与5倍量1,4‑二氢‑2,6‑二甲氧基苯混合制得化合物5。化合物经重结晶纯化后收率均大于80％，远高于文献收率。本发明的方法具有工艺设计合理、收率高、经济可行的优点。
• Counterion‐Paired Bright Heptamethine Fluorophores with NIR‐II Excitation and Emission Enable Multiplexed Biomedical Imaging
  作者：Yang Yang、Caixia Sun、Shangfeng Wang、Kui Yan、Mengyao Zhao、Bin Wu、Fan Zhang

  DOI：10.1002/anie.202117436

  日期：2022.6.13

  A series of heptamethine cyanines (HCs) has absorption/emission maxima spanning from 1100 to 1600 nm. A counterion-paired strategy was explored to improve the brightness of HCs in aqueous solution by reducing aggregation and polarization. Profiting from enhanced brightness and well-shaped absorption spectra, dual-color imaging based on NIR-II excitation and emission was performed in living mice for

  一系列七次甲基花青 (HC) 的最大吸收/发射波长范围为 1100 至 1600 nm。探索了一种反离子配对策略，通过减少聚集和极化来提高水溶液中 HC 的亮度。得益于增强的亮度和形状良好的吸收光谱，首次在活体小鼠中进行了基于 NIR-II 激发和发射的双色成像。
• Pulst, Manfred; Kropfgans, Frank; Weissenfels, Manfred, Zeitschrift fur Chemie, 1988, vol. 28, # 8, p. 286 - 287
  作者：Pulst, Manfred、Kropfgans, Frank、Weissenfels, Manfred

  DOI：——

  日期：——
• Kinetics and mechanisms of nucleophilic displacements with heterocycles as leaving groups. 2. N-benzylpyridinium cations: rate variation with steric effects in the leaving group
  作者：Alan R. Katritzky、Azzahra M. El-Mowafy、Giuseppe Musumarra、Kumars Sakizadeh、Choudhry Sana-Ullah、Sayed M. M. El-Shafie、Sukhpal S. Thind

  DOI：10.1021/jo00332a013

  日期：1981.9
• Ishchenko, A. A.; Kudinova, M.A.; Slominskii, Yu. L., Journal of Organic Chemistry USSR (English Translation), 1986, p. 150 - 157
  作者：Ishchenko, A. A.、Kudinova, M.A.、Slominskii, Yu. L.、Tolmachev, A. I.

  DOI：——

  日期：——