1. W.E. Truce and A.M. Murphy, Chem. Revs., 48, 69 (1951).
2. C.J.M. Stirling, “The Chemistry of Organic Sulfur Compounds, ” Vol. 3. (1966).
3. F.C. Whitmore and F.H. Hamilton, Org. Syn., Coll Vol. 1, 492 (1941).
4. H. Gilman, E.W. Smith, and H.J. Oatfield, J. Amer. Chem. Soc., 56, 1413 (1934).
5. Ger. P. 912, 091 May. 24 (1954).