ILLUSTRATIONS 



TEXT FIGURES 



Fig. 1, Curve 1. Thiophthalic anhydride in glacial acetic acid. 

 Curve 2. Thiophthalic anhydride in sulphuric acid. 



2. Full curve. Dithiophthalimide in alcohol. 



Dash-dot curve. Dithiophthalimide in alcohol with 5 equivalents of 



sodium ethoxide. 

 Dash curve. Dithiophthalimide in sulphuric acid. 

 Dot curve. Dithiophthalimide in pyridine. 



3. Curve 1. Thiophthalanil in glacial acetic acid. 

 Curve 2. Thiophthalanil in sulphuric acid. 



4. Curve 1. Phthalanil oxime in alcohol. 



Curve 2. Phthalanil oxime in alcohol with 5 equivalents of sodium 



ethoxide. 

 Curve 3. Phthalanil oxime in sulphuric acid. 

 Curve 4. Phthalanil oxime acetate in alcohol. 



5. Full curve. Thiophthaloxime in alcohol. 



Dash-dot curve. Thiophthaloxime in alcohol with 1 equivalent of 



sodium ethoxide. 

 Dash curve. Thiophthaloxime in sulphuric acid. 

 Dot curve. Thiophthaloxime sulphate in alcohol. 



6. Curve 1. Thiophthaloxime acetate in alcohol. 

 Curve 2. Thiophthaloxime in alcohol. 



125 



