Crounse Journal of Organic Chemistry, 1951 , vol. 16, p. 492,494 Full Text Show Details Birtwell Journal of the Chemical Society, 1952 , p. 1279,1282 Full Text Show Details Chase et al. Journal of the Chemical Society, 1951 , p. 3439,3442 Full Text Show Details Birtwell et al. Journal of the Chemical Society, 1948 , p. 1650 Full Text Show Details Modest Journal of Organic Chemistry, 1956 , vol. 21, p. 1,12