六羰基钼 (0) 诱导的烯丙基硫化物 I、砜 II 和硒化物 III 在回流的二恶烷中脱硫,导致碳亲核试剂发生亲核取代。相对庞大的亲核试剂 2-乙氧羰基-2-钠基环戊酮的攻击在脱硫后烯丙基单元的较少取代末端发生区域选择性,仅产生一种异构体。钠丙二酸二乙酯对 I 和 III 的攻击优先发生在 γ 位,而对 II 的攻击优先发生在脱磺酰化后烯丙基单元的更多取代端。在没有碳亲核试剂的情况下,在回流的二恶烷中用 Mo(CO)6 处理 I、II 和 III 导致还原性脱硫。H2O 的加入加速了还原脱硫。
Synthesis of allyl selenides by palladium-catalyzed decarboxylative coupling
作者:Shelli R. Waetzig、Jon A. Tunge
DOI:10.1039/b806949b
日期:——
This communication details the Pd-catalyzed decarboxylation of selenocarbonates; use of a chiral nonracemic catalyst affords enantioenriched allyl selenides which undergo stereospecific [2,3]-sigmatropicrearrangements to form enantioenriched allylic amines and chlorides.
On the reactivity of indium(III) benzenechalcogenolates (chalcogen = sulfur and selenium) towards organyl halides for the synthesis of organyl phenyl chalcogenides
作者:Clovis Peppe、Liérson Borges de Castro
DOI:10.1139/v09-043
日期:2009.5
was examined. A practical one-pot method to prepare organyl phenyl chalcogenides from indium metal and diphenyl dichalcogenide was found. The coupling is fairly broad in scope and generally works better for organyl halides capable to produce stablecarbocations.
Indium(I) Iodide-Mediated Cleavage of Diphenyl Diselenide. An Efficient One-Pot Procedure for the Synthesis of Unsymmetrical Diorganyl Selenides
作者:Brindaban C. Ranu、Tanmay Mandal、Sampak Samanta
DOI:10.1021/ol034178c
日期:2003.5.1
A simple and efficient procedure has been developed for the synthesis of unsymmetrical diorganyl selenides through a one-pot indium(I) iodide-mediated reaction of alkyl halide and diphenyl diselenide in methylene chloride at room temperature. [reaction: see text]
Indium(I) Iodide-Promoted Cleavage of Diaryl Diselenides and Disulfides and Subsequent Condensation with Alkyl or Acyl Halides. One-Pot Efficient Synthesis of Diorganyl Selenides, Sulfides, Selenoesters, and Thioesters
作者:Brindaban C. Ranu、Tanmay Mandal
DOI:10.1021/jo0493727
日期:2004.8.1
disulfides undergo facile cleavages by indium(I) iodide and the corresponding generated selenate and thiolate anions condense in situ with alkyl or acyl halides present in the reaction mixture. Thus, a simple, efficient, and general procedure has been developed for the synthesis of unsymmetrical diorganyl selenides, sulfides (thioethers), selenoesters, and thioesters by this one-pot reaction at room temperature
Ruthenium(iii)-catalysed phenylselenylation of allyl acetates by diphenyl diselenide and indium(i) bromide in neat: isolation and identification of intermediate
作者:Amit Saha、Brindaban C. Ranu
DOI:10.1039/c0ob00317d
日期:——
A fast and efficient phenylselenylation of allyl acetates by diphenyl diselenide and indium(I) bromide has been achieved in neat under the catalysis of Ru(acac)3. The intermediate complex of diphenyl diselenide and indium has been isolated and identified as a polymeric pentacoordinated In(III) selenolate complex, [In(SePh)3]n.