Photochemical Functionalization of Helicenes.
Chemistry
; 26(2): 543-547, 2020 Jan 07.
Article
em En
| MEDLINE
| ID: mdl-31691389
ABSTRACT
Herein, a visible-light photochemical approach for practical helicene functionalization at very mild reaction conditions is described. The photochemical reactions allow for the regiospecific and innate late-stage functionalization of helicenes and are easily executed either through the activation of C(sp2 )-Br bonds in helicenes using K2 CO3 as inorganic base or direct C(sp2 )-H helicene bond functionalization under oxidative photoredox reaction conditions. Overall, using these transformations six different functional groups are introduced to the helicene scaffold through C-C and four different C-heteroatom bond-forming reactions.
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01-internacional
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MEDLINE
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Compostos Policíclicos
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Idioma:
En
Ano de publicação:
2020
Tipo de documento:
Article