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苯硫酚与叔丁基乙炔在黑暗中的加成反应进行緩慢,得到的是1:1加成物和少量的2:1加成物。这个反应受光及苯甲酰过氧化物的作用而加速,生成同样的产物。苯硫酚与叔丁基乙炔在乙醇鈉存在下的反应进行很緩慢,只得到少量的2:1加成物。 1:1加成物藉氯化汞在水溶液中分解所得到的羰基化合物与2,4-二硝基苯肼作用生成腙。这个腙与硫代乙酸和叔丁基乙烛的加成物与2,4-二硝基苯肼作用时所得到的腙相同,表明分解产物中的羰基化合物为叔丁基乙醛。1:1加成物因此是∝-叔丁基-β-苯硫基乙烯。根据这些結果,作者建議这个加成反应为游离基历程。
The addition of thiophenol to t-butylacetylene in the dark proceeded slowly, resulting in a 1: 1 adduct and a small amount of 2: 1 adduct. This reaction is accelerated by light and benzoyl peroxide to produce the same product. The reaction of the thiophenol with t-butylacetylene in the presence of sodium ethoxide was slow and only a small amount of 2: 1 adduct was obtained. 1: 1 adduct by mercuric chloride in aqueous solution decomposition of carbonyl compounds and 2,4-dinitrophenylhydrazine generated hydrazone. This hydrazone was identical to the hydrazone obtained when 2,4-dinitrophenylhydrazine was reacted with the thioacetic acid and tert-butyl-B-adduct, indicating that the carbonyl compound in the decomposition product was t-butylacetaldehyde. The 1: 1 adduct is therefore a-tert-butyl-β-thioethylethylene. Based on these results, the authors suggest that this addition reaction is a free radical process.