ChemInform Abstract: Organic Photochemistry. Part 84. Photoactivation of Distal Functional Groups in Polyfunctional Molecules. Intramolecular Aryl Sensitized Ketone Photoreduction via an Internal Singlet‐Triplet Switch.

This is the authors' abstract. We don't add key points for this paper.

An energy relay mechanism is proposed for the self‐sensitized, site‐specific reduction of the 17‐keto group in (I) in which the 11‐keto moiety functions switch as an intermediate singlet‐triplet; singlet excitation of the Dps‐"antenna chromophor"‐group is suggested to be the first step followed by intramolecular singlet‐singlet energy transfer (intra‐SSET) to the 11‐keto moiety.