Bromo-catalyzed photo esterification of benzylsilanes with alcohols under aerobic conditions

A photoinduced esterification reaction has been developed. In this reaction, benzylsilane shows very nice reactivity and selectivity, affording the corresponding esters as the only products. Under photo irradiation, the highly active bromo radical can be generated from the pre-catalyst CBr4, which w...

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Main Authors: Aishun Ding, Ruixia Xie, Guangxin Gu, Jing Sun
Format: Article
Language:English
Published: Elsevier 2017-02-01
Series:Journal of Saudi Chemical Society
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S1319610316300758
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author Aishun Ding
Ruixia Xie
Guangxin Gu
Jing Sun
author_facet Aishun Ding
Ruixia Xie
Guangxin Gu
Jing Sun
author_sort Aishun Ding
collection DOAJ
description A photoinduced esterification reaction has been developed. In this reaction, benzylsilane shows very nice reactivity and selectivity, affording the corresponding esters as the only products. Under photo irradiation, the highly active bromo radical can be generated from the pre-catalyst CBr4, which would promote the initial CSi bond cleavage of benzylsilane via single electron transfer and the final transformation of acetal into ester via proton transfer. The existence of oxygen can not only oxidize the in situ generated benzyl radical into aldehyde intermediate, but also assist to regenerate bromo radical from bromine anion.
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spelling doaj.art-a0b0da429e084a3abb6c1100d50597642022-12-22T01:58:39ZengElsevierJournal of Saudi Chemical Society1319-61032017-02-0121224524910.1016/j.jscs.2016.10.001Bromo-catalyzed photo esterification of benzylsilanes with alcohols under aerobic conditionsAishun Ding0Ruixia Xie1Guangxin Gu2Jing Sun3Department of Macromolecular Science, Fudan University, 220 Handan Road, Shanghai 200433, PR ChinaSchool of Chemistry and Materials Science, Liaoning Shihua University, Dandong Road 1, Fushun 113001, PR ChinaDepartment of Materials Science, Fudan University, 220 Handan Road, Shanghai 200433, PR ChinaSchool of Chemistry and Materials Science, Liaoning Shihua University, Dandong Road 1, Fushun 113001, PR ChinaA photoinduced esterification reaction has been developed. In this reaction, benzylsilane shows very nice reactivity and selectivity, affording the corresponding esters as the only products. Under photo irradiation, the highly active bromo radical can be generated from the pre-catalyst CBr4, which would promote the initial CSi bond cleavage of benzylsilane via single electron transfer and the final transformation of acetal into ester via proton transfer. The existence of oxygen can not only oxidize the in situ generated benzyl radical into aldehyde intermediate, but also assist to regenerate bromo radical from bromine anion.http://www.sciencedirect.com/science/article/pii/S1319610316300758PhotochemistryEsterificationBromoBenzylsilaneEster
spellingShingle Aishun Ding
Ruixia Xie
Guangxin Gu
Jing Sun
Bromo-catalyzed photo esterification of benzylsilanes with alcohols under aerobic conditions
Journal of Saudi Chemical Society
Photochemistry
Esterification
Bromo
Benzylsilane
Ester
title Bromo-catalyzed photo esterification of benzylsilanes with alcohols under aerobic conditions
title_full Bromo-catalyzed photo esterification of benzylsilanes with alcohols under aerobic conditions
title_fullStr Bromo-catalyzed photo esterification of benzylsilanes with alcohols under aerobic conditions
title_full_unstemmed Bromo-catalyzed photo esterification of benzylsilanes with alcohols under aerobic conditions
title_short Bromo-catalyzed photo esterification of benzylsilanes with alcohols under aerobic conditions
title_sort bromo catalyzed photo esterification of benzylsilanes with alcohols under aerobic conditions
topic Photochemistry
Esterification
Bromo
Benzylsilane
Ester
url http://www.sciencedirect.com/science/article/pii/S1319610316300758
work_keys_str_mv AT aishunding bromocatalyzedphotoesterificationofbenzylsilaneswithalcoholsunderaerobicconditions
AT ruixiaxie bromocatalyzedphotoesterificationofbenzylsilaneswithalcoholsunderaerobicconditions
AT guangxingu bromocatalyzedphotoesterificationofbenzylsilaneswithalcoholsunderaerobicconditions
AT jingsun bromocatalyzedphotoesterificationofbenzylsilaneswithalcoholsunderaerobicconditions