Copper(II) thioxanthone carboxylate as a photoswitchable photocatalyst for photoinduced click chemistry


Dadashi-Silab S., Yagci Y.

TETRAHEDRON LETTERS, cilt.56, sa.46, ss.6440-6443, 2015 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 56 Sayı: 46
  • Basım Tarihi: 2015
  • Doi Numarası: 10.1016/j.tetlet.2015.09.155
  • Dergi Adı: TETRAHEDRON LETTERS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.6440-6443
  • İstanbul Teknik Üniversitesi Adresli: Evet

Özet

A new efficient copper photocatalyst to photochemically induce the copper(I)-catalyzed azide-alkyne cycloaddition (CuAAC) reaction without the need for additional ligands is reported. The thioxanthone carboxylate moiety was combined with copper(II) ions by a simple ion exchange reaction to form a copper (II) thioxanthone carboxylate photocatalyst. In the catalytic process, intramolecular photoinduced electron transfer was stimulated to reduce copper(II) ions giving rise to a copper(I) species capable of catalyzing the CuAAC reaction. Temporal control over the click reaction was demonstrated by intermittent light on/off experiments. (C) 2015 Elsevier Ltd. All rights reserved.