作者:Hiromitsu Masada、Tadahide Sakajiri
DOI:10.1246/bcsj.51.866
日期:1978.3
Di-t-butyl ether was prepared in 6–73% yields by the reactions of t-butyl halide with Ag2CO3, Ag2O, HgO, ZnO, ZnCO3, PbO2, Cu2(CO3)(OH)2, and Tl2O3 at 20–65 °C in hydrocarbons under nitrogen. Similar reactions gave seven new hindered di-t-alkyl ethers: di-t-pentyl ether, bis(1,1-dimethylbutyl) ether, bis(1-ethyl-1-methylpropyl) ether, bis(1,1-dimethylpentyl) ether, bis(1-ethyl-1-methylbutyl) ether, bis(1,1-diethylpropyl) ether, and bis(1,1-dimethylhexyl) ether. The yield of di-t-alkyl ether decreased as the t-alkyl group became bulky. A slight difference in the skeletal structure of the t-alkyl halide markedly influences the substitution. The reaction pathways are elucidated on the basis of the experimental results.
在氮气气氛下,在烃类溶剂中,将叔丁基卤化物与Ag2CO3、Ag2O、HgO、ZnO、ZnCO3、PbO2、Cu2(CO3)(OH)2和Tl2O3在20-65°C反应,制备了收率为6-73%的叔丁基醚。类似的反应还得到了七种新的受阻二叔烷基醚:二叔戊基醚、双(1,1-二甲基丁基)醚、双(1-乙基-1-甲基丙基)醚、双(1,1-二甲基戊基)醚、双(1-乙基-1-甲基丁基)醚、双(1,1-二乙基丙基)醚和双(1,1-二甲基己基)醚。随着叔烷基基团体积的增大,二叔烷基醚的收率下降。叔烷基卤化物的骨架结构略有差异,对取代反应有显著影响。根据实验结果阐明了反应途径。