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Beilstein J. Org. Chem. 2024, 20, 3061–3068, doi:10.3762/bjoc.20.254
Graphical Abstract
Scheme 1: Photoinduced [2 + 2]-cycloaddition–cycloreversion cycle of norbornadiene (1a) and quadricyclane (2a...
Figure 1: Representative bis- and tris-norbornadienyl-substituted benzene derivatives.
Scheme 2: Synthesis of alkynyl-arene-linked norbornadienes 1h–n by Sonogashira–Hagihara coupling reactions.
Scheme 3: Photoisomerization of norbornadiene derivatives 1h–l,n (20 µM) to quadricyclanes 2h–l,n in cyclohex...
Figure 2: Photometric monitoring of the irradiation of 1h (A), 1i (B), 1j (C), 1k (D), 1l (E), and 1n (F); λex...
Scheme 4: Triplet-sensitized photoisomerization of norbornadiene 1o to quadricyclane 2o.
Figure 3: Photometric monitoring of the irradiation of 1i (A) and 1l (B) in the presence of [Ru(phen)3](PF6)2...
Beilstein J. Org. Chem. 2024, 20, 1236–1245, doi:10.3762/bjoc.20.106
Scheme 1: Left: Reaction mechanism of the 3-CR with Aza-H as the photocatalyst. Potentials are given vs SCE. ...
Figure 1: A) Room-temperature absorption (black) and emission (yellow) spectra of Aza-H recorded in MeCN/H2O ...
Figure 2: Mechanistic LFP experiments of 25 µM Aza-H with 4CP in MeCN/H2O (9:1) after 355 nm laser pulses. A)...
Figure 3: Mechanistic investigations of Aza-H with TsNa by LFP studies. A) Transient absorption measurements ...
Figure 4: Data sets employed for the calculation ΦISC of Aza-H based on the ground state bleach of Rubpy as t...
Figure 5: Stilbene isomerization and additional energy transfer experiments. A) and B) Triplet quenching expe...