The group 14 (Si, Ge, Sn), group 15 (P, As, Sb, Bi) and group 16 (S, Se, Te)(2-trimethylsilyl)-1-benzometalloles 5 have been prepared from phenylacetylene via three steps and converted into the corresponding C-unsubstituted benzometalloles 7 by detrimethylsilylation.
Regioselective Tandem C–H Alkylation/Coupling Reaction of <i>ortho</i>-Iodophenylethylenes via <i>C</i>,<i>C</i>-Pallada(II)cycles
作者:Bin-Bin Zhu、Wen-Bo Ye、Zhi-Tao He、Shu-Sheng Zhang、Chen-Guo Feng、Guo-Qiang Lin
DOI:10.1021/acscatal.1c03386
日期:2021.10.1
diorganopalladium species with favorable stability and an electron-rich nature, leading to efficient sequential reactions with diverse electrophiles and nucleophiles. Specifically, the development of aryl-alkenyl-palladacycle-based transformations could provide an attractive approach with regio- and stereocontrol for the construction of multifunctionalized arylethylenes. However, currently, the C,C-pallada(II)cycle
Toward Novel Antioxidants: Preparation of Dihydrotellurophenes and Selenophenes by Alkyltelluride-Mediated Tandem S<sub>RN</sub>1/S<sub>H</sub>i Reactions<sup>1</sup>
作者:Lars Engman、Melissa J. Laws、Jonas Malmström、Carl H. Schiesser、Lisa M. Zugaro
DOI:10.1021/jo9907235
日期:1999.9.1
distributions similar to those observed for reactions involving n-BuTeNa. Lithium or sodium phenyltellurolate returned only starting materials from these reaction mixtures. The 2-[2-(n-butyltelluro)-1-hydroxy-1-methyl]ethylphenyl radical (14) is estimated to cyclize with k(c) = 5 x 10(8) s(-)(1) at 25 degrees C. The tandem S(RN)1/S(H)i sequence has been applied to the preparation of the antioxidant analogues, 5-hydroxy-2
Ring opening and extrusion of tellurium atoms in the reaction of benzo[b]tellurophene with trinuclear iron, ruthenium and osmium clusters: X-ray crystal structures of [Os2(μ-C8H6Te)(CO)10], [Os4(μ-C8H4)(μ3-Te)(CO11], [Ru(μ-C8H6Te)(CO)6)], [Ru4(μ3-Te)(μ-C8H6)(CO)11] and [Fe2)μ-C8H6Te(CO)6]
作者:Alejandro J. Arce、Arquímedes Karam、Ysaura De Sanctis、Rubén Machado、Mario V. Capparelli、Jorge Manzur
DOI:10.1016/s0020-1693(96)05153-5
日期:1997.1
[Os2(μ-C8H6)(CO)6] (3) [Os4μ-C8H6)(μ3-Te(CO)11] (4), which were obtained were obtained from the reaction of [Os3(CO)12] and benzo[b]tellurophene. [Ru3(μ-C8H6)(CO)8)] (5) (X-ray reported previously) [Ru2(μ-C8H6Te)(CO)6] (6), [Ru2(μ-C8H6] (7) and [Ru4(μ3-Te(μ-C8H6)(CO)11] (8) were derived from the reaction of [Ru3(CO)12] and benzo[b]tellurophene; [Fe2(μ-C8H6Te)(CO)6] (9) and [Fe2(μ-C8H6)(CO)6] (10) were obtained
Effects of heteroatom substitution in conjugated heterocyclic compounds on photovoltaic performance: from sulfur to tellurium
作者:Y. S. Park、T. S. Kale、C.-Y. Nam、D. Choi、R. B. Grubbs
DOI:10.1039/c4cc01862a
日期:——
changing the benzochalcogenophene donor groups from benzothiophenes to benzoselenophenes to benzotellurophenes. These molecules show red-shifts in absorption and external quantum efficiency maxima from sulfur to selenium to tellurium. In bulk heterojunction solar cell devices, the benzoselenophene derivative shows a power conversion efficiency as high as 5.8% with PC61BM as the electron acceptor.