Light in SmI2-mediated chemistry: Synthetic applications and mechanistic studies

Subhasmita Patra; Sipramayee Satapathy; Aswini Rath; Akash Kumar Nayak; Sandeepan Maity

doi:10.1002/poc.4570

Light in SmI₂-mediated chemistry: Synthetic applications and mechanistic studies

Subhasmita Patra, Sipramayee Satapathy, Aswini Rath, Akash Kumar Nayak, Sandeepan Maity

C. V. Raman College of Engineering

Research output: Contribution to journal › Review article › peer-review

Abstract

SmI₂ is a versatile reagent in single electron transfer-mediated reductive transformations. Photoexcitation of SmI₂ generates a reactive excited state capable of transferring an electron to substrates that are recalcitrant towards accepting electrons. Synthetic results unequivocally indicate light as a green and sustainable promoter of SmI₂-mediated chemistry, with the potential to replace the suspected carcinogen hexamethylphosphoramide (HMPA). Rate constants of photoinduced electron transfer from SmI₂ are in the range of 10⁷–10⁹ M⁻¹ s⁻¹, which are an order of magnitude higher in comparison with the ground state process. Recent advancement in Eu^II- and Ce^III-based photo-redox catalysis rejuvenated the area of photo-catalyzed reactions of low-valent lanthanides. This review article aims to illustrate the role of photoexcitation on SmI₂-mediated reductive transformations.

Original language	English
Article number	e4570
Journal	Journal of Physical Organic Chemistry
Volume	37
Issue number	1
DOIs	https://doi.org/10.1002/poc.4570
State	Published - Jan 2024
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2023 John Wiley & Sons Ltd.

Funding

SM is grateful to C. V. Raman Global University.

Keywords

electron transfer
lanthanides
organic synthesis
photochemistry
samarium

Access to Document

10.1002/poc.4570

Cite this

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abstract = "SmI2 is a versatile reagent in single electron transfer-mediated reductive transformations. Photoexcitation of SmI2 generates a reactive excited state capable of transferring an electron to substrates that are recalcitrant towards accepting electrons. Synthetic results unequivocally indicate light as a green and sustainable promoter of SmI2-mediated chemistry, with the potential to replace the suspected carcinogen hexamethylphosphoramide (HMPA). Rate constants of photoinduced electron transfer from SmI2 are in the range of 107–109 M−1 s−1, which are an order of magnitude higher in comparison with the ground state process. Recent advancement in EuII- and CeIII-based photo-redox catalysis rejuvenated the area of photo-catalyzed reactions of low-valent lanthanides. This review article aims to illustrate the role of photoexcitation on SmI2-mediated reductive transformations.",

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