Details

Autor(en) / Beteiligte

• Guo, Jing
• Xu, Yao‐Wei
• Li, Kang
• Xiao, Li‐Min
• Chen, Sha
• Wu, Kai
• Chen, Xu‐Dong
• Fan, Yan‐Zhong
• Liu, Jun‐Min
• Su, Cheng‐Yong

Titel

Regio‐ and Enantioselective Photodimerization within the Confined Space of a Homochiral Ruthenium/Palladium Heterometallic Coordination Cage

Ist Teil von

• Angewandte Chemie International Edition, 2017-03, Vol.56 (14), p.3852-3856

Auflage

International ed. in English

Ort / Verlag

Germany: Wiley Subscription Services, Inc

Erscheinungsjahr

2017

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The photoinduced regio‐ and enantioselective coupling of naphthols and derivatives thereof is achieved in the confined chiral coordination space of a RuII metalloligand based cage. The racemic or enantiopure cages encapsulate naphthol guests, which then undergo a regiospecific 1,4‐coupling, rather than the normal 1,1‐coupling, to form 4‐(2‐hydroxy‐1‐naphthyl)‐1,2‐napthoquinones; moderate stereochemical control is achieved with homochiral cages. The photoreactions proceed under both aerobic and anaerobic conditions but through distinct pathways that nevertheless involve the same radical intermediates. This unusual dimerization constitutes a very rare example of asymmetric induction in biaryl coupling by making use of coordination cages with dual functionality—photoredox reactivity and stereoselectivity. Confined coordination spaces in redox‐active ruthenium(II) cages enable the photoinduced regio‐ and enantioselective coupling of naphthol and derivatives thereof. The photoreactions proceed under both aerobic and anaerobic conditions but by distinct pathways that nevertheless involve the same radical intermediates.