2,3-bis(phenylselanyl)benzofuran | 1128143-62-3

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并呋喃
• 英文名称: 2,3-bis(phenylselanyl)benzofuran
• 英文别名: 2,3-bis(phenylselanyl)benzo[b]furan；2,3-Bis(phenylselanyl)-1-benzofuran
• CAS: 1128143-62-3
• 化学式: C₂₀H₁₄OSe₂
• 分子量: 428.251
• InChiKey: YYEATNUNFNZTSX-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.74
• 重原子数：
  23
• 可旋转键数：
  4
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  13.1
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为产物：
  描述：

  ((2-methoxyphenyl)ethynyl)(phenyl)selane 、 苯基溴化硒 以 二氯甲烷 为溶剂， 以65%的产率得到2,3-bis(phenylselanyl)benzofuran
  参考文献：
  名称：

  Electrophilic Cyclization of 2-Chalcogenealkynylanisoles: Versatile Access to 2-Chalcogen-benzo[b]furans

  摘要：

  An efficient synthesis of 2-chalcogen-3-substituted-benzo[b]furan compounds has been accomplished via electrophilic cyclization reaction of 2-chalcogenealkynyl anisoles using I-2, ICl, Br-2 and PhSeBr as electrophile sources. The product distributions were strongly dependent on the nature of substituents in the aromatic ring of anisole and on the chalcogen atom directly bonded to the triple bond. The 2-chalcogen-3-iodo-benzo[b]furans obtained smoothly underwent conversion to more complex structures of benzo[b]furan derivatives via palladium- or copper-catalyzed cross-coupling reaction with thiols, diphenyl diselenides, and zincates.

  DOI：

  10.1021/jo802736e

文献信息

• Synthesis of 2,3-bis-organochalcogenyl-benzo[<i>b</i>]chalcogenophenes promoted by Oxone®
  作者：Gelson Perin、Liane K. Soares、Paola S. Hellwig、Marcio S. Silva、José S. S. Neto、Juliano A. Roehrs、Thiago Barcellos、Eder J. Lenardão

  DOI：10.1039/c9nj00526a

  日期：——

  We report here an alternative and tunable metal-free synthesis of benzo[b]chalcogenophenes via the electrophilic cyclization of 2-functionalized chalcogenoalkynes promoted by Oxone®. The use of mild reaction conditions, efficiency and generality are characteristics of this new approach, which was suitable to convert different diselenides and 2-functionalized chalcogenoalkynes into a total of twenty-two

  我们在这里报告苯并[的替代和可调不含金属的合成b ] chalcogenophenes经由通过提升的冰冷的2-官能chalcogenoalkynes亲电环化反应。该新方法的特点是使用温和的反应条件，效率和通用性，适用于将不同的二硒化物和2-官能化硫属炔烃转化为总共22种2,3,3-双-有机och基-苯并[ b ]硫属oph烯，其中十八个是第一次合成。在Pd催化的与苯乙炔的反应中，将新型化合物2-（丁基硒基）-3-（苯基硒基）苯并呋喃用作底物，以高收率获得Sonogashira的偶联衍生物。
• Trichloroisocyanuric Acid (TCCA): A Suitable Reagent for the Synthesis of Selanyl‐benzo[ <i>b</i> ]chalcogenophenes
  作者：Gustavo B. Blödorn、Luis Fernando B. Duarte、Juliano A. Roehrs、Márcio S. Silva、José S. S. Neto、Diego Alves

  DOI：10.1002/ejoc.202200775

  日期：2022.10.26

  A new protocol for the synthesis of different 3-organyl-benzo[b]chalcogenophenes was developed through the reaction of diorganyl diselenides with trichloroisocyanuric acid (TCCA) in ethanol. Under the optimized reaction conditions, a range of benzo[b]furans, benzo[b]thiophenes and benzo[b]selenophenes were synthesized in good to excellent yields using mild reaction conditions.

  通过二有机基二硒化物与三氯异氰脲酸 (TCCA) 在乙醇中的反应，开发了一种合成不同 3-有机基苯并[ b ]硫族酚的新方案。在优化的反应条件下，一系列苯并[ b ]呋喃、苯并[ b ]噻吩和苯并[ b ]硒吩类化合物在温和的反应条件下以良好至优异的收率合成。
• Synthesis, Characterizations, Crystal Structure, DFT, and Hirshfeld Surface Analysis of 4-Cyclohexyl-1-(thiophene-2-carbonyl)thiosemicarbazide
  作者：Shivendra Kumar Pandey、Seema Gupta、Shubham Jaiswal、M. K. Gond、M. K. Bharty、R. J. Butcher

  DOI：10.1007/s10870-022-00965-x

  日期：——

  The crystal structure of the thiosemicarbazide derivative 4-cyclohexyl-1-(thiophene-2-carbonyl)thiosemicarbazide (ChtcTSC), C12H17N3OS2, is reported here. The title compound ChtcTSC has been characterized by various physicochemical techniques viz UV–Vis., Infrared, and NMR. It crystallizes in the monoclinic system having space group P21/c. The dihedral angle between the thiophene and cyclohexyl rings is 60.7(4)°. The crystal packing is established by intermolecular N–H⋯O packing interactions involving a three-center donor hydrogen bond between the keto oxygen atom of the thiophene group and H atoms belonging to the hydrazine group which links the molecules into chains along the (011) plane of the unit cell. Hydrogen bonds between the hydrazine hydrogen atom and one of the thiophene groups and C–H⋯Cg π -ring interactions provide added stability to the crystal packing. The fingerprint plots associated with Hirshfeld surface analysis indicate that there are different types of weak interactions viz. O⋯H–C, O⋯H–N, and S⋯H–C. The geometry optimization has been performed using the DFT method, and geometrical parameters thus obtained for ChtcTSC correlate with the single-crystal X-ray data. The TD-DFT study showed a small HOMO and LUMO energy gap of 2.869 eV. The electronic transition from the ground state to the excited state due to a transfer of electrons from HOMO to LUMO levels is mainly associated with the n → π* transition. The crystal structure of 4-cyclohexyl-1-(thiophene-2-carbonyl)thiosemicarbazide (ChtcTSC) is reported here where the title compound ChtcTSC has been characterized by various physiochemical techniques including UV–Vis., Infrared, NMR, DFT and Hirshfeld surface analysis.

  本文报告了硫代氨基脲衍生物 4-环己基-1-(噻吩-2-羰基)硫代氨基脲（ChtcTSC）（C12H17N3OS2）的晶体结构。标题化合物 ChtcTSC 已通过紫外可见光、红外线和核磁共振等各种理化技术进行了表征。它在单斜体系中结晶，空间群为 P21/c。噻吩环和环己基环之间的二面角为 60.7(4)°。晶体的堆积是由分子间的 N-H⋯O 堆积相互作用形成的，其中涉及噻吩基团的酮氧原子和属于肼基团的 H 原子之间的三中心供体氢键，该氢键将分子沿单胞的 (011) 平面连接成链。肼氢原子和其中一个噻吩基团之间的氢键以及 C-H⋯Cg π - 环相互作用增加了晶体堆积的稳定性。与 Hirshfeld 表面分析相关的指纹图表明，存在不同类型的弱相互作用，即 O⋯H-C、O⋯H-N 和 S⋯H-C。使用 DFT 方法对 ChtcTSC 进行了几何优化，由此获得的几何参数与单晶 X 射线数据相关。TD-DFT 研究表明，该化合物的 HOMO 和 LUMO 能隙较小，分别为 2.869 eV 。由于电子从 HOMO 水平转移到 LUMO 水平，从基态到激发态的电子转变主要与 n → π* 转变有关。本文报告了 4-环己基-1-(噻吩-2-羰基)硫代氨基甲酰肼（ChtcTSC）的晶体结构，并通过紫外可见光、红外、核磁共振、DFT 和 Hirshfeld 表面分析等多种理化技术对标题化合物 ChtcTSC 进行了表征。
• Direct Electrooxidative Selenylation/Cyclization of Alkynes: Access to Functionalized Benzo[b]furans
  作者：Balati Hasimujiang、Shengsheng Lin、Chengwei Zheng、Yong Zeng、Zhixiong Ruan

  DOI：10.3390/molecules27196314

  日期：——

  A mild, practical, metal and oxidant-free methodology for the synthesis of various C-3 selenylated benzo[b]furan derivatives was developed through the intramolecular cyclization of alkynes promoted with diselenides via electrooxidation. A wide range of selenium-substituted benzo[b]furan derivatives were obtained in good to excellent yields with high regioselectivity under constant current in an undivided

  通过用二硒化物通过电氧化促进炔烃的分子内环化，开发了一种温和、实用、无金属和无氧化剂的方法，用于合成各种 C-3 硒化苯并[ b ]呋喃衍生物。在分别配备碳和铂板作为阳极和阴极的未分隔电池中，在恒定电流下以良好至优异的产率获得了范围广泛的硒取代的苯并[ b ]呋喃衍生物，具有高区域选择性。此外，收敛方法表现出良好的官能团耐受性，并且可以很容易地以良好的效率进行放大，从而从简单、容易获得的起始材料中快速获得各种硒化苯并[ b ]呋喃衍生物。