To synthesize 4B-group element-containing styrene monomers, alkylmetalation reactions of 4-methylstyrene (1) in the presence of lithium diisopropylamide (2) were investigated. Trialkylsilylation of 1 proceeded easily by the reaction with trialkylsilyl chloride in the presence of 2 to form mono- and bis-trialkylsilylated methylstyrene. This synthetic method was expanded to other 4B-element-containing styrenes such as germyl and stannyl compounds.
为了合成含 4B 族元素的
苯乙烯单体,研究人员对 4-
甲基苯乙烯(1)在
二异丙基酰胺
锂(2)存在下的烷基
金属化反应进行了研究。在 2 的存在下,通过与三烷基
硅酰
氯反应,1 很容易发生三烷基
硅烷化反应,生成单-三烷基
硅烷化
甲基苯乙烯和双-三烷基
硅烷化
甲基苯乙烯。这种合成方法被推广到其他含 4B 元素的
苯乙烯,如芽基和
锡化合物。