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以Salen-Mn(Ⅲ)为催化剂、NBS为溴源构建了一种催化体系,以次氯酸钠为氧化剂成功地将4,4’-二羟基二环己烷氧化为4,4’-二环己酮。分别考察了催化剂Salen Mn(Ⅲ)、NBS以及次氯酸钠用量对反应的影响,发现当4,4’-二羟基二环己烷为0.5 mmol、Salen-Mn(Ⅲ)为0.04 mmol、NBS为0.26 mmol、次氯酸钠为18 mmol时,在25℃反应0.5 h,4,4’-二羟基二环己烷的转化率和4,4’-二环己酮的选择性分别高达96.1%和93.0%。
With Salen-Mn (Ⅲ) as a catalyst and NBS as a bromine source, a catalytic system was constructed. Using sodium hypochlorite as oxidant, 4,4’-dihydroxydicyclohexane was successfully oxidized to 4,4’-dicyclohexanone . The effects of the catalysts Salen Mn (Ⅲ), NBS and sodium hypochlorite on the reaction were investigated. The results showed that when 4,4’-dihydroxybicyclohexane was 0.5 mmol, Salen-Mn (Ⅲ) was 0.04 mmol and NBS was 0.26 mmol , When sodium hypochlorite is 18 mmol, the conversion of 4,4’-dihydroxydicyclohexane and the selectivity of 4,4’-dicyclohexanone are as high as 96.1% and 93.0% respectively at 25 ℃ for 0.5 h.