At room temperature, dibenzoyl peroxide undergoes oxidative addition reaction with metallic copper powder and 4 dimethylamine pyridine which affords the last products as binuclear copper?complex (1), [Cu(C6H5COO)2(C7H...At room temperature, dibenzoyl peroxide undergoes oxidative addition reaction with metallic copper powder and 4 dimethylamine pyridine which affords the last products as binuclear copper?complex (1), [Cu(C6H5COO)2(C7H10N2)]2. This complex is further characterized by spectroscopic methods. The structure of complex (1) has been determined by a single crystal X ray analysis. Crystallographic data are as follows: monoclinic, space group P21/n, a=10.446(2)?, b=11.140(5)?, c=17.179(3)?, β=95.92(3)°, V=1988.4(7)?3, Z=4, F(000)=884, μ=11.27cm-1, D(calcd.)=1.429g·cm-3, R=0.0399, Rw=0.1202. Each copper?ion is coordinated by two bridging bidentate benzoate and 4 dimethylamine pyridine to form dimeric molecule. CCDC: 188744.展开更多
Organic chemists now have a much better understanding of the mechanism of copper catalysis,thank to the recent work by Shen,Hartwig,and Xue published in Science [1].In this work,Shen’s team demonstrated,that well-def...Organic chemists now have a much better understanding of the mechanism of copper catalysis,thank to the recent work by Shen,Hartwig,and Xue published in Science [1].In this work,Shen’s team demonstrated,that well-defined,isolable organocopper(Ⅲ) complexes can be synthesized through the oxidative addition of alkyl electrophiles to copper(1) species.This elemental step has been widely proposed as a key step in copper-catalyzed cross-coupling of alkyl electrophiles (Fig.1).展开更多
文摘At room temperature, dibenzoyl peroxide undergoes oxidative addition reaction with metallic copper powder and 4 dimethylamine pyridine which affords the last products as binuclear copper?complex (1), [Cu(C6H5COO)2(C7H10N2)]2. This complex is further characterized by spectroscopic methods. The structure of complex (1) has been determined by a single crystal X ray analysis. Crystallographic data are as follows: monoclinic, space group P21/n, a=10.446(2)?, b=11.140(5)?, c=17.179(3)?, β=95.92(3)°, V=1988.4(7)?3, Z=4, F(000)=884, μ=11.27cm-1, D(calcd.)=1.429g·cm-3, R=0.0399, Rw=0.1202. Each copper?ion is coordinated by two bridging bidentate benzoate and 4 dimethylamine pyridine to form dimeric molecule. CCDC: 188744.
基金This work was supported by the National Natural Science Foundation of China （No.20776089） and the New Century Excellent Talents Program of Ministry of Education （No.NCET-05-0783）. The State Key Laboratory of Polymer Materials Engineering in Sichuan University was acknowledged for providing dmol3 modules and Prof. Ying Xue, Xiang-yuan Li, and Quan Zhu were grateful for the useful discussions.
基金This work was supported by the National Science Foundation,USA(CHE-2237757).
文摘Organic chemists now have a much better understanding of the mechanism of copper catalysis,thank to the recent work by Shen,Hartwig,and Xue published in Science [1].In this work,Shen’s team demonstrated,that well-defined,isolable organocopper(Ⅲ) complexes can be synthesized through the oxidative addition of alkyl electrophiles to copper(1) species.This elemental step has been widely proposed as a key step in copper-catalyzed cross-coupling of alkyl electrophiles (Fig.1).
