Barb Journal of the Chemical Society, 1955 , p. 2577,2580 Full Text Show Details Union Carbide and Carbon Corp. Patent: US2553696 , 1944 ; Full Text Show Details Bestian Houben-Weyl 11 Tl.2 <1958> 223-261 Full Text Show Details Jones et al. Journal of Organic Chemistry, 1944 , vol. 9, p. 137