2,4-diphenyl-5,6,7,8-tetrahydro-1-benzopyranium perchlorate | 15997-44-1

• 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-5,6,7,8-tetrahydro-1-benzopyranium perchlorate
• 英文别名: 2,4-diphenyl-5,6,7,8-tetrahydrochromenylium perchlorate；2,4-diphenyl-5,6,7,8-tetrahydro-chromenylium; perchlorate；2,4-Diphenyl-5,6,7,8-tetrahydro-chromenylium; Perchlorat；1-Benzopyrylium, 5,6,7,8-tetrahydro-2,4-diphenyl-, perchlorate；2,4-diphenyl-5,6,7,8-tetrahydrochromen-1-ium;perchlorate
• CAS: 15997-44-1
• 化学式: C₂₁H₁₉O*ClO₄
• 分子量: 386.832
• InChiKey: DVJJEKFGOJCTJN-UHFFFAOYSA-M

计算性质

• 辛醇/水分配系数(LogP)：
  1.02
• 重原子数：
  27
• 可旋转键数：
  2
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.19
• 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-5,6,7,8-tetrahydro-1-benzopyranium perchlorate 在 乙酸酐 、 sodium carbonate 作用下， 以 乙腈 为溶剂， 反应 3.0h， 生成 (E)-3-(2,4-Diphenyl-6,7-dihydro-5H-chromen-8-yl)-2-(4-nitro-phenyl)-propenal
  参考文献：
  名称：

  Werner, Tobias; Greif, Dieter; Pulst, Manfred, Zeitschrift fur Chemie, 1990, vol. 30, # 8, p. 286

  摘要：

  DOI：
• 作为产物：
  描述：

  2-(3-oxo-1,3-diphenylpropyl)cyclohexanone 在 高氯酸 、 乙醚 、 乙酸酐 作用下， 生成 2,4-diphenyl-5,6,7,8-tetrahydro-1-benzopyranium 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。
• Synthese von substituierten 2-(Ethoxycarbonyl-formyl-methylen)-2H-benzopyranen und ihre Überführung in Polymethinderivate
  作者：Tobias Werner、Dieter Greif、Manfred Pulst、Manfred Weissenfels

  DOI：10.1007/bf00811675

  日期：1994.1

  3-Chloro-2-ethoxycarbonyl crotonic aldehyde C reacts with several 2-hydroxybenzene carbaldehydes and 2-hydroxy-naphthalene-1-carbaldehyde, respectively, to give 2-(ethoxycarbonyl-formyl-methplene)-2H-benzopyrans la-h under mild conditions. With exception of Ic and Id these compounds are mixtures of E-Z isomers. la-h easily undergo reactions, e.g. with aniline and derivatives to give 2a-e, with various CH-acidic compounds to give 3a-h and with 2-alkyl-4,6-diphenyl pyrylium salts to give 4a-e. In the presence of alcoholic hydrochloric acid, compounds 1 are converted into symmetrical 2,2'-benzopyrylotrimethine salts 5a-e which exhibit longwave absorptions from 640-705 nm. These polymethine dyes with ester groups in the methine chain exhibit a remarkable thermal stability.
• 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：——
• 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：——
• Pyrylocyanines. 13. Symmetrical pyrylocyanines based on 2,3-polymethylene-4,6-diphenylpyrylium salts
  作者：M. A. Kudinova、N. A. Derevyanko、G. G. Dyadyusha、A. A. Ishchenko、A. I. Tolmachev

  DOI：10.1007/bf00505591

  日期：1981.9