1. Department of Chemistry of Heterocyclic Compounds L.M.Litvinenko Institute of Physical Organic and Coal Chemistry NAS of Ukraine 50 Kharkiv road Kyiv 02160 Ukraine
2. Laboratory of Chemistry of Stable Carbenes Institute of Organic Chemistry NAS of Ukraine 5 Murmanskaya Str. Kyiv 02660 Ukraine
3. Department of Physical-Chemical Methods of Research Institute of Organic Chemistry NAS of Ukraine 5 Murmanskaya Str. Kyiv 02660 Ukraine
4. Life Chemicals Inc., Ukraine 5 Murmanskaya Str. Kyiv 02660 Ukraine
5. Lviv Polytechnic National University 12 Bandera Str. Lviv 79013 Ukraine