Krug et al. Journal of Organic Chemistry, 1958 , vol. 23, p. 212,215 Full Text Show Details Bailey; Cummins Journal of the American Chemical Society, 1954 , vol. 76, p. 1940 Full Text View citing articles Show Details Backer; Blaas Recueil des Travaux Chimiques des Pays-Bas, 1942 , vol. 61, p. 785,798