Abstract A one-pot protocol for the preparation of symmetrical dibenzyl diselenides and disulfides from the corresponding benzyl alcohols employing NaBH2Se3 and NaBH2S3 as selenium-transfer and sulfur-transfer reagent, respectively, is described. Structurally diverse substituted benzyl alcohols afforded the corresponding diselenides and disulfides in good to excellent yields. The protocol is simple and
摘要 描述了一种通过一锅法从相应的苄醇制备对称的二苄基二硒化物和二硫化物的方法,分别使用NaBH 2 Se 3和NaBH 2 S 3作为硒转移剂和硫转移剂。结构上不同的取代苄醇以良好或优异的收率提供了相应的二硒化物和二硫化物。该方案简单温和,并且在短的反应时间内获得了产物。 描述了一种通过一锅法从相应的苄醇制备对称的二苄基二硒化物和二硫化物的方法,分别使用NaBH 2 Se 3和NaBH 2 S 3作为硒转移剂和硫转移剂。结构上不同的取代苄醇以良好或优异的收率提供了相应的二硒化物和二硫化物。该方案简单温和,并且在短的反应时间内获得了产物。
Metal- and photocatalyst-free synthesis of 3-selenylindoles and asymmetric diarylselenides promoted by visible light
作者:Ignacio D. Lemir、Willber D. Castro-Godoy、Adrián A. Heredia、Luciana C. Schmidt、Juan E. Argüello
DOI:10.1039/c9ra03642c
日期:——
the synthesis of 3-selenylindoles employing diorganyl diselenides and indoles or electron-rich arenes as starting materials. Visible blue light was used to promote the reaction without employing transitionmetal complexes or organic photocatalysts as sensitizers. Additives such as strong oxidants or bases were not required. Moreover, ethanol was employed as a benign solvent under mild reaction conditions
Synthesis of Dibenzylic Diselenides from Elemental Selenium and Benzylic Quaternary Ammonium Salts
作者:Feng Chen、Fuhai Li、Qingle Zeng
DOI:10.1002/ejoc.202101086
日期:2021.11.8
C2-symmetric dibenzylic diselenides: A synthetic method for (highly enantioenriched) dibenzylic diselenides by SN2 nucleophilic substitution of (enantioenriched) quaternary ammonium salts and elemental selenium is described.
c ^ 2 -对称dibenzylic diselenides:由S表示的合成方法(对映体富集的高度)dibenzylic diselenides Ñ描述的(对映体富集)季铵盐和元素硒2亲核取代。
Highly Efficient Route to Diselenides from the Reactions of Imines and Selenium in the Presence of Carbon Monoxide and Water
Reactions of selenium with imines (RR1CNR2) of aldehydes and ketones in the presence of carbon monoxide, water and triethylamine lead to reductive selenation, on aerobic work-up, to afford symmetrical diselenides (RR1CHSe)2 in good to excellent yields. The proposed mechanism suggests that both in situ generated carbonyl selenide (SeCO) and hydrogen selenide (H2Se) are involved in the reaction.
Ruthenium(III) Chloride Catalyzed Efficient Synthesis of Unsymmetrical Diorganyl Selenides via Cleavage of Dibenzyl and Diphenyl Diselenides in the Presence of Zinc
作者:Zhao、Yu、Yan、Wu、Ren Liu、Wei He、Wang
DOI:10.1021/jo051015o
日期:2005.9.1
one-pot route to unsymmetrical diorganyl selenides has been developed by ruthenium(III) chloride catalyzed reactions of dibenzyl or diphenyl diselenides with alkyl halides in the presence of zinc. Organic iodides, bromides, and activated chlorides underwent the reactions efficiently. Unreactive organic chlorides also underwent the same type of selenation with sodium bromide as the additive.