Thioxolone誘導体のボーラログラフィー (第1報)
Thioxoloneのアルカリ分解
1964 年 84 巻 8 号 p. 691-695
詳細
1964 年 84 巻 8 号 p. 691-695
Pantlitschko and others reported that thioxolone (I) is decomposed in alkaline solution to form 2-mercaptoresorcinol (II) and it may be assumed that II thereby formed would easily be oxidized to 2, 2′-dithiodiresorcinol (III). Alkaline decomposition of I was examined by estimation of the intermediate product by iodometry and examination of the polarographic behavior of III to determine the amount of III formed from I. Formation of II is observed when I is left in a solution of over pH 8, the amount increasing with higher pH and becoming maximum at around pH 12. Oxidation of II to III does not occur in a solution of pH 2-3 for 100 minutes but becomes rapid as the solution becomes alkaline from around pH 7, and is the most rapid at around pH 12. Determination of III by polarography revealed that its formation occurs when I is left in a solution of over pH 8 and the amount seems to increase in proportion to the length of time and concentration. III shows a reduction wave and the limiting current is a diffusion current-controlled, n=2.
