1H-isotellurochromene | 253-43-0

• 分子结构分类: 有机化合物 - 苯类化合物
• 英文名称: 1H-isotellurochromene
• 英文别名: isotellurochromene
• CAS: 253-43-0
• 化学式: C₉H₈Te
• 分子量: 243.763
• InChiKey: NOGMGZKFGQEZQL-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.88
• 重原子数：
  10
• 可旋转键数：
  0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.11
• 拓扑面积：
  0
• 氢给体数：
  0
• 氢受体数：
  0

反应信息

• 作为反应物：
  描述：

  1H-isotellurochromene 在 溴 作用下， 以 正己烷 为溶剂， 反应 0.5h， 以88%的产率得到2,2-dibromoisotellurochromene
  参考文献：
  名称：

  2-Substituted Isotellurochromenium Salt Derivatives: Preparations, Structures, Spectroscopic Properties

  摘要：

  Several types of novel isotellurochromenium salt derivatives (2-10) were prepared from the isotellurochromenes (1). The isotellurochromenium tetrafluoroborates (2), triflates (3-5), tosylates (6) and mesylates (7) are telluronium salts, and the dihalogenoisotellurochromenes (8-10) are telluranes. The molecular structures of the isotellurochromenium tosylate (6a) and the dichloroisotellurochromene (8a) were characterized by an X-ray crystallographic analysis using the 3-tert-butyl derivatives.

  DOI：

  10.3987/com-09-s(s)124
• 作为产物：
  描述：

  2,2-diiodoisotellurochromene 在 sodium sulfide 作用下， 以 正己烷 、 水 为溶剂， 反应 0.17h， 以94%的产率得到1H-isotellurochromene
  参考文献：
  名称：

  2-Substituted Isotellurochromenium Salt Derivatives: Preparations, Structures, Spectroscopic Properties

  摘要：

  Several types of novel isotellurochromenium salt derivatives (2-10) were prepared from the isotellurochromenes (1). The isotellurochromenium tetrafluoroborates (2), triflates (3-5), tosylates (6) and mesylates (7) are telluronium salts, and the dihalogenoisotellurochromenes (8-10) are telluranes. The molecular structures of the isotellurochromenium tosylate (6a) and the dichloroisotellurochromene (8a) were characterized by an X-ray crystallographic analysis using the 3-tert-butyl derivatives.

  DOI：

  10.3987/com-09-s(s)124

文献信息

• Studies on tellurium-containing heterocycles. Part 18.1 Preparation and structure of 2-benzotelluropyrylium salts and 2-benzoselenopyrylium salts
  作者：Haruki Sashida、Kazuo Ohyanagi、Mao Minoura、Kin-ya Akiba

  DOI：10.1039/b111045b

  日期：2002.2.22

  The regioselective and stereospecific intramolecular ring closure reactions of o-ethynylbenzyl tellurols 5A and o-ethynylbenzyl selenols 5B, which were readily generated by the reaction of the o-ethynylbenzyl bromides 4 with sodium hydrogen telluride (NaHTe) or sodium hydrogen selenide (NaHSe), produced the isotellurochromenes 6A and isoselenochromenes 6B together with (Z)-1-methylidene-2-telluraindans

  邻乙炔基苄基碲5A和邻乙炔基苄基硒醇5B的区域选择性和立体特异性分子内闭环反应，很容易通过邻乙炔基苄基溴化物4与碲化氢钠（NaHTe）或硒化氢钠（NaHSe）的反应而产生，分别与（Z）-1-亚甲基-2-telluraindans 7A和（Z）-1-亚甲基-2-硒代茚满7B一起生产了异硫代色酮6A和异硒烯色酮6B。获得的异色素 通过用下述方法处理，将6A和6B转化成相应的2-苯并碲并四氟硼酸根9A和2-苯并硒化吡啶并四氟硼酸根9B。四氟硼酸三苯基碳鎓（PH 3 Ç + BF 4 -分别以优良产率）。X射线的结构分析叔丁基还描述了衍生物9Ac和9Bc。
• Novel Oxidative Ring Opening Reaction of 1H-Isotelluro-chromenes to Bis(o-formylstyryl) Ditellurides
  作者：Haruki Sashida、Hirohito Satoh、Kazuo Ohyanagi、Mamoru Kaname

  DOI：10.3390/molecules15031466

  日期：——

  The oxidation of 1-unsubstituted or 1-phenyl-1H-isotellurochromenes with m-chloroperbenzoic acid (mCPBA) in CHCl3 resulted in a ring opening reaction to produce as the sole products the corresponding o-formyl or benzoyl distyryl ditellurides, which were also produced by the hydrolysis of the 2-benzotelluropyrylium salts readily prepared from the parent isotellurochromene.

  1-unsubstituted or 1-phenyl-1H-isotellurochromenes with m-chloroperbenzoic acid (mCPBA) in CHCl3 的氧化反应导致开环反应，生成的唯一产物是相应的邻甲酰基或苯甲酰基二丙烯基二碲化物。
• Studies on Tellurium-Containing Heterocycles. Part 20. Reactions of 2-Benzoselenopyrylium Salts and 2-Benzotelluropyrylium Salts with Nucleophiles: Formation of 1-Functionalized 1H-Isoselenochromenes and 1H-Isotellurochromenes
  作者：Haruki Sashida、Kazuo Ohyanagi

  DOI：10.1248/cpb.52.57

  日期：——

  were produced by the reaction of the salts 1 with Grignard reagents, were converted to the corresponding 1,3-disubstituted 2-benzopyrylium salts (14-17, 19) by treatment with triphenylcarbenium tetrafluoroborate (Ph(3)C(+) BF(4)(-)), respectively. The 1-benzylselenopyrylium salts (19A) and 1-benzyltelluropyrylium salts (19B) exist in the solvent as an equilibrium mixture of the salts (19) and the corresponding

  研究了2-苯并硒基吡啶鎓（1A）和2-苯并碲基吡啶鎓阳离子（1B）与各种亲核试剂的反应。LiAlH（4），醇钠（NaOMe，NaOi-Pr和NaOt-Bu），二乙胺，正丁胺和丙酮与1反应生成1H-异色酮（2）和相应的1取代的产物（4-9）在温和条件下几乎可以达到高产。通过盐1与格利雅试剂反应生成的1-烷基（苯基）异硒烯二酮（10-13）和1-苄基异铬烯酮（18A，18B）被转化为相应的1,3-二取代的2-苯并吡啶鎓分别用四氟硼酸三苯基碳鎓（Ph（3）C（+）BF（4）（-））处理盐（14-17，19）。
• Studies on tellurium-containing heterocycles. Part 10.1 2-Benzotelluropyrylium salts: first preparation and reactions with Grignard reagents
  作者：Haruki Sashida、Kazuo Ohyanagi

  DOI：10.1039/a804036b

  日期：——

  The first simple preparation of 2-benzotelluropyrylium salts 4 from o-ethynylbenzyl bromides 1 in two steps, and the characteristic reaction of these salts 4 with benzylmagnesium bromide and other Grignard reagents are described.

  本文介绍了首次通过两个步骤从邻乙炔基苄基溴化物 1 简单制备 2-苯并四氢吡喃盐 4 的方法，以及这些盐 4 与苄基溴化镁和其他格氏试剂的特征反应。
• Studies on chalcogen-containing heterocycles. Part 37: m-CPBA oxidation of isotellurochromenes and isoselenochromenes
  作者：Haruki Sashida、Mamoru Kaname、Kazuo Ohyanagi、Mao Minoura

  DOI：10.1016/j.tet.2012.07.023

  日期：2012.12

  The oxidation of the 1-unsubstituted isotellurochromenes and isoselenochromenes with m-CPBA resulted in a novel ring-opening reaction to give the o-formyl distyryl ditellurides and diselenides as the sole products in good yields, respectively. The o-benzoyl distyryl ditelluride and diselenide were also produced from the corresponding 1-phenylisochromenes. In contrast, the 1-benzyl and 1-n-butylisochromenes were oxidized to afford the (Z)-1-benzylideneisochromenes and (Z)-1-butylideneisochromenes under similar conditions; no distyryl compounds were obtained. The distyryl compounds were also obtained by the hydrolysis of the corresponding 2-benzochalcogenopyrylium salts, which were easily converted from the 2-benzoisochromenes by treatment with triphenylcarbenium tetrafluoroborate (Ph3C+BF4-). (C) 2012 Elsevier Ltd. All rights reserved.