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胺和碳酸二甲酯加 Yb(OTf) 3催化 ,无需溶剂 ,80℃下反应 8h,可高收率生成氨基甲酸酯。收率除对硝基苯胺的产品 6 1%外 ,7例 87%～ 96 %。氨基甲酸酯的合成@王先恒
Amine and dimethyl carbonate plus Yb (OTf) 3 catalysis, without solvent, 80 ℃ for 8h, urethane can be generated in high yield. The yield was 87% -96% in 7 patients except 6 1% of p-nitroaniline. Synthesis of carbamate @ Wang Xianheng