1. Laboratorio de Síntesis Orgánica Facultad de Química Universidad de la Habana 10400 La Habana Cuba
2. Departament of Surfactants and Nanobiotechnology Institute for Advanced Chemistry of Catalonia (IQAC-CSIC) and CIBER-BBN Barcelona Spain
3. Yachay Tech University School of Chemical Sciences and Engineering 100119- Urququi Ecuador
4. Departamento de Química Orgánica Facultad de Ciencias Químicas Universidad Complutense de Madrid 28040- Madrid Spain
5. CAI RMN Universidad Complutense de Madrid 28040 Madrid (Spain)
6. School of Chemistry and Physics University of KwaZul-Natal Durban South Africa
7. Institute for Chemical Research Kyoto University Uji Kyoto 611-0011 Japan