Asahi Kasei Chemicals Corporation
Patent: EP1460056 A1, 2004 ;
Location in patent: Page 31 ;

Mindl, Jaromir; Halama, Ales; Cernosek, Zdenek
Collection of Czechoslovak Chemical Communications, 1996 , vol. 61, # 7 p. 1053 - 1063

Orlov, S. I.; Chimishkyan, A. L.; Grabarnik, M. S.
Journal of Organic Chemistry USSR (English Translation), 1983 , p. 1981 - 1987
Zhurnal Organicheskoi Khimii, 1983 , vol. 19, # 11 p. 2271 - 2277

Ritchie
Journal of the Chemical Society, 1935 , p. 1059