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芳香基氟硼酸重氮盐于氯化乙基汞及二乙基汞的反应
THE REACTION OF ARYLDIAZONIUM FLUOROBORATE WITH ETHYL MERCURIC CHLORIDE AND DIETHYL MERCURY
【摘要】 Hodgson等曾企圖利用重氮鹽的氯化鋅的複鹽與Grignard試劑反應,希望能將烴基引入芳香環;伹在反應產物中,並無所預期的芳香烴,而有不同此例的Ar·Ar,Ar·H,ArN=N·Ar,Ar·N=N·R及Ar·X。根據最近等對芳香基氟硼酸重氮鹽的研究,證明芳香基氟硼酸重氮鹽在分解時產生烴離子,而與其它重氮鹽產生烴自由基者不同。作者因此利用芳香基氟硼酸重氮鹽及較Grignard試劑的活潑性小的有機汞化合物來代替芳香基重氮鹽的氯化鋅複鹽及Grignard試劑。在反應產物中,並無乙基芳香烴存在;生成的是不同量的Ar·Ar,Ar·H,Ar·Cl等,結果與Hodgson的實驗基本上相同。
【Abstract】 An attempt was made by Hodgson to introduce alkyl or aryl group into aromatic ring through the reaction between aryldiazonium chloride [(Ar N2 Cl)2·ZnCl2] and Grignard reagent (RMgX). Among the reaction products, however, he found Ar·Ar, Ar·H, ArN=NAr, ArN=N·R, Ar·X present in various proportions, but no Ar·R as expected. According to the result of an recent investigation of A. N. Nesmeyanov, the thermal decom- position of aryldiazonium fluoroborate afforded aryl cation, while the diazonium salt of other types gave aryl radical under the same conditions. The author caused the aryl diazonium fluoroborates to react with the less reactive organo-metallic compounds, namely, ethyl mercuric chloride and diethyl mercury. In contrast to the author’s expectation, no ethylaryls were found, but diaryls (Ar·Ar), aryl- chlorides (Ar·C1) and aromatic hydrocarbons (Ar·H), and diaryls, ethyl mercuric fluoroborates, aromatic hydrocarbons and free mercury were found respectively as reaction products. In each case, tar was formed in considerable amount, especially when the decomposition was carried out with diethyl mercury.
- 【文献出处】 化学学报 ,Acta Chimica Sinica , 编辑部邮箱 ,1955年03期
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