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- Title
Supramolecular Photocatalysis by Utilizing the Host–Guest Charge‐Transfer Interaction: Visible‐Light‐Induced Generation of Triplet Anthracenes for [4+2] Cycloaddition Reactions.
- Authors
Uchikura, Tatsuhiro; Oshima, Mari; Kawasaki, Minami; Takahashi, Kohei; Iwasawa, Nobuharu
- Abstract
Supramolecular photocatalysis via charge‐transfer excitation of a host–guest complex was developed by use of the macrocyclic boronic ester [2+2]BTH‐F containing highly electron‐deficient difluorobenzothiadiazole moieties. In the presence of a catalytic amount of [2+2]BTH‐F, the triplet excited state of anthracene was generated from the charge‐transfer excited state of anthracene@[2+2]BTH‐F by visible‐light irradiation, and cycloaddition of the excited anthracene with several dienes and alkenes proceeded in a [4+2] manner in high yields.
- Subjects
RING formation (Chemistry); PHOTOCATALYSIS; BORONIC esters; EXCITED states; ANTHRACENE; CUCURBITURIL; RESORCINARENES
- Publication
Angewandte Chemie, 2020, Vol 132, Issue 19, p7473
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.201916732