1. A. Iraqi, I. Wataru, Brit. UK Pat. Appl. GB 2383036 A1 20030618 (2003).
2. K. Brunner, A. Van Dijken, J.W. Hofstraat, H.F. Boerner, B.M.W. Langeveld-Voss, N.M.T. Kiggen, J.A.M. Bastiaansen, H.F.M. Schoo, PCT Int. Appl. (2006) (PIXXD2 WO 2006061759 A2 20060615).
3. A. Shiotani, M. Suzuki, Jpn. Kokai Tokkyo Koho (1990) (CAN 113:131757).
4. I.D. Hickson, T.R. Hammonds, PCT Int. Appl. (2003) (WO 2003007955 A2 20030130).
5. Friedel-Crafts Chemistry;Olah,1973