... In each of these cases, a large part sulfur of isothioureas favor the elimination of the (1) Sterling Professorship of Chemistry Research Assistant, Sulfur as sulfate and, thereby, limit the yield of 1936-1937. sulfonyl chloride. These two competing re- Sprague and Johnson, ibid., 69, 1837 (1937). (2) (a) Johnson and Sprague, THIS JOURNAL, 68, 1348 (1936), (b) actions are expressed below.