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以2-萘酚、醛和氨基甲酸酯为原料,苯磺酸铜为催化剂,在加热、无溶剂条件下,通过三组分“一锅法”合成了1-氨甲酸酯基烷基-2-萘酚衍生物.考察了催化剂用量、反应温度和溶剂对产品收率的影响.结果表明,仅2 mol%苯磺酸铜就可以催化该反应的进行.反应结束后,催化剂重复使用4次,催化活性无明显下降.通过1H NMR,13C NMR,IR,质谱和元素分析对产品结构进行表征.提出了可能的催化作用机理.
Using 2-naphthol, aldehyde and carbamate as raw materials and copper benzenesulfonate as catalyst, 1-carbamate groups were synthesized by three-component “one-pot” heating under solvent-free condition Alkyl-2-naphthol derivatives.The effects of the amount of the catalyst, the reaction temperature and the solvent on the yield of the product were investigated.The results showed that only 2 mol% copper benzenesulfonate could catalyze the reaction.After the reaction, the catalyst After repeated use for 4 times, the catalytic activity did not decrease obviously.The structure of the product was characterized by 1H NMR, 13C NMR, IR, MS and elemental analysis, and possible catalytic mechanism was proposed.