Hurd; Pollack Journal of the American Chemical Society, 1938 , vol. 60, p. 1905,1910 Full Text Show Details Kimel; Cope Journal of the American Chemical Society, 1943 , vol. 65, p. 1992,1997 Full Text Show Details Allen Journal of the American Chemical Society, 1930 , vol. 52, p. 2956 Organic Syntheses, 1943 , vol. Coll. Vol. II, p. 228