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Triplet Energy Transfer Mechanism in Copper Photocatalytic N– and O–Methylation

18 January 2024, Version 1
Working Paper
This content is a preprint and has not undergone peer review at the time of posting.

Abstract

Methylation reactions are chemically simple but challenging to perform under mild and non-toxic conditions. Photochemical strategies merged with copper catalysis enable rapid reaction times and broad applicability to N-heterocycles and aromatic carboxylic acids in high yields and good functional group tolerance. Detailed mechanistic investigations revealed a triplet-triplet energy transfer mechanism between hypervalent iodine reagents and readily available photosensitizers.

Keywords

copper catalysis
photocatalysis
energy transfer
methylation
hypervalent iodine

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Version History

Jan 18, 2024 Version 1

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The content is available under CC BY 4.0 [opens in a new tab]

DOI

10.26434/chemrxiv-2024-lk6l8
D O I: 10.26434/chemrxiv-2024-lk6l8 [opens in a new tab]

Funding

Advanced Research Center Chemical Building Blocks Consortium (ARC CBBC)

Author’s competing interest statement

The author(s) have declared they have no conflict of interest with regard to this content

Ethics

The author(s) have declared ethics committee/IRB approval is not relevant to this content

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