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

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

Research output: Contribution to journalReview articlepeer-review


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.

Original languageEnglish
Article numbere4570
JournalJournal of Physical Organic Chemistry
Issue number1
StatePublished - Jan 2024
Externally publishedYes

Bibliographical note

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© 2023 John Wiley & Sons Ltd.


  • electron transfer
  • lanthanides
  • organic synthesis
  • photochemistry
  • samarium


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