The Open Organic Chemistry Journal

2012, 6 : 21-26
Published online 2012 June 22. DOI: 10.2174/1874095201206010021
Publisher ID: TOOCJ-6-21

Synthesis and Use of Imidazolium Bound Rose Bengal Derivatives for Singlet Oxygen Generation

Alioune Fall , Massene Sene , Ousmane Diouf , Mohamed Gaye , Generosa Gomez and Yagamare Fall
Departamento de Quimica Organica Facultad de Quimica Edificio Ciencias, Experimentales Universi-dad de Vigo, 36200 Vigo Pontevedra, Spain.

ABSTRACT

We describe the preparation and use of two new imidazolium-bound Rose Bengal derivatives for singlet oxy-gen generation. Photolysis of oxygen-saturated solution of furan rings in the presence of the imidazolium-bound sensitiz-ers provides the corresponding butenolides. The sensitizers could be recovered after the oxidation reaction.

Keywords:

Ionic liquids, singlet oxygen, butenolides synthesis, rose Bengal, photooxygenation reactions.