Rapid Assessment of the Reaction‐Condition‐Based Sensitivity of Chemical Transformations
作者:Lena Pitzer、Felix Schäfers、Frank Glorius
DOI:10.1002/anie.201901935
日期:2019.6.17
clear overview of the sensitivity of reactions to key parameters is highly desirable. Herein, the development of such a method is described. The intuitive, standardized presentation of the results in a radar diagram enables the sensitivity of a protocol to be rapidly assessed. This method was applied to five different visible‐light‐mediated photochemical reactions, and the results were correlated to
Dearomative Cascade Photocatalysis: Divergent Synthesis through Catalyst Selective Energy Transfer
作者:Michael J. James、Jonas Luca Schwarz、Felix Strieth-Kalthoff、Birgit Wibbeling、Frank Glorius
DOI:10.1021/jacs.8b03302
日期:2018.7.18
The discovery and application of dearomative cascade photocatalysis as a strategy in complex molecule synthesis is described. Visible-light-absorbing photosensitizers were used to (sequentially) activate a 1-naphthol derived arene precursor to divergently form two different polycyclic molecular scaffolds through catalyst selective energy transfer.
Intramolecular triplet state cyclization of but-3-enoxyacetonaphthones
作者:Peter J. Wagner、Masami Sakamoto
DOI:10.1021/ja00208a033
日期:1989.12
Dearomative Cycloadditions Utilizing an Organic Photosensitizer: An Alternative to Iridium Catalysis
作者:Alessa B. Rolka、Burkhard Koenig
DOI:10.1021/acs.orglett.0c01622
日期:2020.7.2
A highly efficient, cheap, and organic alternative to the commonly used iridium photosensitizer (Ir[dF(CF3)ppy]2(dtbpy))PF6 ([Ir–F]) is presented for visible-light energy transfer catalysis. The organicdye 2CzPN surpasses [Ir–F] in selectivity while at the same time being easily accessible in one step. The catalyst is recyclable and, due to its uncharged nature, soluble in nonpolar solvents such as
Enantioselective Intramolecular <i>ortho</i> Photocycloaddition Reactions of 2‐Acetonaphthones
作者:Peng Yan、Simone Stegbauer、Qinqin Wu、Elena Kolodzeiski、Christopher J. Stein、Ping Lu、Thorsten Bach
DOI:10.1002/anie.202318126
日期:2024.3.22
The intramolecular ortho photocycloaddition of 2-acetonaphthones has been achieved with high enantioselectivity. The catalytic use of a chiral Lewis acid was critical for the success of the reaction and its mode of action has been elucidated by mechanistic experiments and calculations. The primary photocycloaddition products underwent photochemically or thermally a variety of consecutive reactions