- Mechanistic Insight into the Oxidation of Organic Phenylselenides by H2O2
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The oxidation of organic phenylselenides by H2O2is investigated in model compounds, namely, n-butyl phenyl selenide (PhSe(nBu)), bis(phenylselanyl)methane (PhSeMeSePh), diphenyl diselenide (PhSeSePh), and 1,2-bis(phenylselanyl)ethane
- Ribaudo, Giovanni,Bellanda, Massimo,Menegazzo, Ileana,Wolters, Lando P.,Bortoli, Marco,Ferrer-Sueta, Gerardo,Zagotto, Giuseppe,Orian, Laura
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- P-Silylation of Arenes via Organic Photoredox Catalysis: Use of p-Silylated Arenes for Exclusive o-Silylation, o-Acylation, and o-Alkylation Reactions
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Photocatalytic regiospecific p-silylation of arenes has been achieved by the coupling of in situ generated silyl radical with arene radical cation. The strategy involves reductive activation of PhSe-SiR3 and single electron transfer from the electron rich
- Pandey, Ganesh,Tiwari, Sandip Kumar,Singh, Pushpendra,Mondal, Pradip Kumar
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supporting information
p. 7730 - 7734
(2021/10/25)
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- P -Selective (sp2)-C-H functionalization for an acylation/alkylation reaction using organic photoredox catalysis
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p-Selective (sp2)-C-H functionalization of electron rich arenes has been achieved for acylation and alkylation reactions, respectively, with acyl/alkylselenides by organic photoredox catalysis involving an interesting mechanistic pathway.
- Pandey, Ganesh,Tiwari, Sandip Kumar,Singh, Bhawana,Vanka, Kumar,Jain, Shailja
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supporting information
p. 12337 - 12340
(2017/11/20)
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- A highly efficient heterogeneous ruthenium(III)-catalyzed reaction of diaryl diselenides with alkyl halides leading to unsymmetrical diorganyl selenides
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A highly efficient heterogeneous ruthenium(III)-catalyzed reaction of diaryl diselenides with alkyl halides was achieved in DMF at 100?°C in the presence of 2?mol% of an MCM-41-immobilized bidentate nitrogen ruthenium(III) complex [MCM-41-2N-RuCl3] and zinc, yielding a variety of unsymmetrical diorganyl selenides in good to excellent yields. This new heterogeneous ruthenium catalyst can easily be prepared via a simple two-step procedure from commercially readily available and inexpensive reagents, and recovered by filtration of the reaction solution and recycled for at least eight times without a significant loss of activity.
- Chen, Qiurong,Wang, Pingping,Yan, Tao,Cai, Mingzhong
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- Ruthenium(III) chloride catalyzed efficient synthesis of unsymmetrical diorganyl selenides via cleavage of dibenzyl and diphenyl diselenides in the presence of zinc
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An efficient 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.
- Zhao, Xiaodan,Yu, Zhengkun,Yan, Shenggang,Wu, Sizhong,Liu, Ren,He, Wei,Wang, Liandi
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p. 7338 - 7341
(2007/10/03)
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- A convenient procedure for the preparation of organic selenides
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Treatment of diphenyl diselenide with tributylphosphine in an alkaline medium forms phenylselenolate ion which converts alkyl halides, α,β-unsaturated ketones, and epoxides into alkyl selenides, (phenylseleno)alkenones, and β-(phenylseleno)alkanols, respe
- Sakakibara,Katsumata,Watanabe,Toru,Ueno
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p. 377 - 379
(2007/10/02)
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- SYNTHESIS OF α-SELENOALKYLLITHIUM COMPOUNDS
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α-Phenylselenoalkyllithiums and α-methylselenoalkyllithiums have been prepared from the corresponding selenoacetals and alkyllithiums.Several features of this reaction are disclosed.For example, the reaction is more readily achieved on phenylselenoacetals than on methylseleno analogues.Those derived from hindered carbonyl compounds are less readily cleaved. s-BuLi/THF proved superior to n-BuLi in THF, itself better than n-BuLi in ether.
- Krief, A.,Dumont, W.,Clarembeau, M.,Bernard, G.,Badaoui, E.
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p. 2005 - 2022
(2007/10/02)
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