高等学校化学学报
高等學校化學學報
고등학교화학학보
CHEMICAL JOURNAL OF CHINESE UNIVERSITIES
2001年
4期
645-647
,共3页
石峰%邓友全%司马天龙%龚成科
石峰%鄧友全%司馬天龍%龔成科
석봉%산우전%사마천룡%공성과
有机金%胺%氧化羰化%氨基甲酸酯
有機金%胺%氧化羰化%氨基甲痠酯
유궤금%알%양화탄화%안기갑산지
At 200 ℃ and 50 mPa, the oxidative carbonylation of amines catalyzed by organic gold complexes HAuCl4, Au(PPh3)Cl, Au(PPh3)2Cl, Au(PPh3)NO3 and ［Au(PPh3)］2S afforded R(NHCO2CH3)n with a high conversion and selectivity. The best results were obtained when using the catalyst Au(PPh3)Cl in the presence of PPh3. The catalytic efficiency of catalytic Au(PPh3)Cl was compared to Pd(PPh3)2Cl2, e.g. the conversion was 97.2% and selectivity was 89% when using catalyst Au(PPh3)Cl in the presence of PPh3, while the conversion was 98.8% and selectivity was 86% when using catalyst Pd(PPh3)2Cl2 in the presence of PPh3. The experimental results suggested that Au complexes might be promising catalysts instead of Pd catalysts for the oxidative carbonylation of amines to carbamates.
