Solvent-free reactions of C60 with active methylene compounds, either with or without carbon tetrabromide, in the presence of bases under high-speed vibration milling conditions
作者:Ting-Hu Zhang、Guan-Wu Wang、Ping Lu、Yu-Jin Li、Ru-Fang Peng、You-Cheng Liu、Yasujiro Murata、Koichi Komatsu
DOI:10.1039/b403027c
日期:——
Solvent-free reactions of C(60) with active methylene compounds, either with or without carbon tetrabromide (CBr(4)), in the presence of a base under high-speed vibration milling (HSVM) conditions were investigated. The reaction of C(60) with diethyl bromomalonate was conducted under HSVM conditions in the presence of piperidine, triethylamine or Na(2)CO(3) to afford cyclopropane derivative. In the
在高速振动研磨(HSVM)条件下,在碱的存在下,研究了C(60)与活性亚甲基化合物(有或没有四溴化碳(CBr(4)))的无溶剂反应。C(60)与溴代丙二酸二乙酯的反应在HSVM条件下在哌啶,三乙胺或Na(2)CO(3)的存在下进行,得到环丙烷衍生物。在存在CBr(4)的情况下,可以通过将C(60)与丙二酸二乙酯,丙二酸二甲酯,乙酰乙酸乙酯和氰基乙酸乙酯分别直接反应,并借助1,8-二氮杂双环[5]来获得甲富勒烯。 ,4,0]十一碳-7-烯,哌啶,三乙胺或Na(2)CO(3)。更有趣的是,在哌啶的存在下,C(60)与丙二酸二乙酯和丙二酸二甲酯反应生成1,4-双加合物,三乙胺或Na(2)CO(3)在HSVM条件下。另一方面,二氢呋喃稠合的C(60)衍生物,是由C(60)与乙酰乙酸乙酯,2,4-戊二酮和5,5-二甲基-1,3-环己二酮反应制得的。一个基地。在相同条件下,活化较少的芳基甲基酮,例如2