1202-36-4Relevant articles and documents
Hypervalent iodine in synthesis. VI. The electrophilic arylation of diaryliodonium salts to sodium telluride
You,Chen
, p. 1441 - 1444 (1992)
Diaryliodonium salts readily take place electrophilic arylation at Te to afford symmetrical diaryl tellurides in good yields.
Sodium telluride in N-methyl-2-pyrrolidone: An efficient telluration system for the synthesis of aromatic tellurides and ditellurides
Suzuki,Nakamura
, p. 549 - 551 (1992)
Sodium telluride prepared in situ from tellurium and sodium hydride in N-methyl-2-pyrrolidone was found to act as an efficient tellurating agent for nonactivated aromatic iodides, providing a simple route to a variety of diaryl tellurides, alkyl aryl tellurides and diaryl ditellurides.
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Pierini,A.B.,Rossi,R.A.
, p. 4667 - 4673 (1979)
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Phase transfer catalysis in synthesis of organylthio(organyltelluro) acetylenes
Martynov, Alexander V.,Mirskova, Anna N.,Le Guillanton, Georges
, p. 245 - 250 (1998)
Phase transfer reaction of diorganyl ditellurides with organyl-2,2-dichlorovinyl sulfides, using as phase transfer catalysts benzyltriethylammonium chloride or 18-crown-6 ether, was used as a new general method to prepare organylthio(organyltelluro)acetylenes R-S-C≡C-Te-R′. The organyltellurolate anion formed in the presence of NaOH is the reaction intermediate.
Catalyst free one-pot synthesis of symmetrical diaryl tellurides with Te0/KOH
Zhang, Shaozhong,Karra, Kranthi,Koe, Adam,Jin, Jin
, p. 2452 - 2454 (2013)
A highly efficient new protocol for C-Te bond formation leading to symmetrical diaryl tellurides has been developed. The synthesis employed aryl iodides and elemental tellurium as starting materials in the presence of KOH. It is a one-pot reaction without using any catalyst. Utilizing this new protocol, a variety of aryl and heteroaryl iodides are reacted with elemental tellurium to afford the corresponding diaryl tellurides in good to excellent yields.
Moessbauer studies of after effects of Auger ionization following internal conversion in organo-(129m)tellurium compounds
Nath, Amar,Sauer, Ch.,Halpern, A.
, p. 5125 - 5128 (1983)
The after effects of Auger ionization in diphenyl-telluride, dibenzyl telluride, and their dispersions in a solvent at 4.2 K, were compared with the same systems labeled with tellurium in the ground state, viz. 129Te.The Moessbauer emission, in the former case is preceded by Auger event and β decay, while in the latter case, it is preceded only by β decay.Three species were observed in the two compounds, I-, C6H5I or C6H5CH2I, and the third one has tentatively been identified as (C6H5)2I+ or (C6H5CH2)2I+.The formation of I- represents rupture of both bonds, i.e., complete fragmentation of the molecule.The probability of fragmentation was estimated with the help of matrix isolation experiments, as the electronically excited tellurium-129 ion formed by fragmentation of the molecule, following the Auger ionization, may interact with a neighboring organo-tellurium molecule in neat compounds, and enter combination.In about 85percent of the events in case of diphenyl telluride and 55percent in case of dibenzyl telluride, molecules escape complete fragmentation despite the fact that about 100 eV excitation energy may be deposited during charge neutralization.A novel mode for rapid disposal of energy is discussed.
Trichloroisocyanuric Acid-Promoted Synthesis of Arylselenides and Aryltellurides from Diorganyl Dichalcogenides and Arylboronic Acids at Ambient Temperature
Sun, Nan,Zheng, Kai,Sun, Pengyuan,Chen, Yang,Jin, Liqun,Hu, Baoxiang,Shen, Zhenlu,Hu, Xinquan
, p. 3577 - 3584 (2021/06/15)
A transition-metal-free method for the synthesis of arylselenides and aryltellurides has been established based on the oxidative cross-coupling between diorganyl dichalcogenides and aryl boronic acids. With trichloroisocyanuric acid as an oxidant, the reaction proceeded smoothly to afford the desired products in 45–97% yields at ambient temperature. Three reaction reagents used in this method are stoichiometric and the oxidation by-product isocyanuric acid can be easily isolated and recovered. Besides of arylboronic acids, aryl trifluoroborates and aryl trihydroxyborates salts are also able to perform this transformation. (Figure presented.).
Dechalcogenization of Aryl Dichalcogenides to Synthesize Aryl Chalcogenides via Copper Catalysis
Cao, Fei,Chen, Jinhong,Deng, Jiedan,Deng, Xuemei,Hou, Yongsheng,Shao, Xiangfeng,Shi, Tao,Wang, Yongqiang,Wang, Zhen,Wu, Lingxi,Yang, Jinru,Yang, Yuhang
, p. 2707 - 2712 (2020/03/11)
An application for dechalcogenization of aryl dichalcogenides via copper catalysis to synthesize aryl chalcogenides is disclosed. This approach is highlighted by the practical conditions, broad substrate scope, and good functional group tolerance with several sensitive groups such as aldehyde, ketone, ester, amide, cyanide, alkene, nitro, and methylsulfonyl. Furthermore, the robustness of this methodology is depicted by the late-stage modification of estrone and synthesis of vortioxetine. Remarkably, synthesis of more challenging organic materials with large ring tension under milder conditions and synthesis of some halogen contained diaryl sulfides which could not be synthesized using metal-catalyzed coupling reactions of aryl halogen are successfully accomplished with this protocol.
