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Cover Picture: Metal‐Free, Cooperative Asymmetric Organophotoredox Catalysis with Visible Light (Angew. Chem. Int. Ed. 4/2011)
Author(s) -
Neumann Matthias,
Füldner Stefan,
König Burkhard,
Zeitler Kirsten
Publication year - 2011
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201006295
Subject(s) - enantioselective synthesis , photocatalysis , catalysis , chemistry , cover (algebra) , photochemistry , ruthenium , materials science , organic chemistry , mechanical engineering , engineering
Highly enantioselective α‐alkylations of aldehydes are achieved through the cooperative combination of an organocatalytic cycle and a photocatalytic cycle—represented by the slices of citrus fruits in the “catalytic cocktail”. The beautifully orange‐colored photocatalyst eosin Y and green‐light irradiation are used to replace noble‐metal catalysts, as explained by K. Zeitler et al. in their Communication on page 951 ff. (Cover graphics were designed in cooperation with Georg Neumann.)