<i>ortho</i>-DIQUATERNARY AROMATIC COMPOUNDS: I. THE SYNTHESIS OF <i>ortho</i>-DITERTIARYBUTYLBENZENE. SOME REACTIONS OF SIDE CHAIN SUBSTITUTED DERIVATIVES
作者:L. R. C. Barclay、C. E. Milligan、N. D. Hall
DOI:10.1139/v62-252
日期:1962.8.1
into o-di-t-butylbenzene (VI) (44%) together with rearrangement products. Ultraviolet spectral evidence indicated a slight distortion of the benzene ring in VI and its various side chain derivatives. Side reactions were encountered in the synthesis of III, which involved the conversion of this acid by periodate or lead tetraacetate oxidation into a lactone (X) and the anhydride (XI). A mechanism is
1,1,4,4-四甲基四氢萘酮 (I) 通过氧化程序转化为邻亚苯基二异丁酸 (III)。III 的二甲酯的氢化还原产生 β,β'-二羟基-邻-二-叔丁基苯 (IV)。IV 的二甲苯磺酸酯通过氢化物还原转化为邻二叔丁基苯 (VI) (44%) 以及重排产物。紫外光谱证据表明 VI 及其各种侧链衍生物中的苯环略有变形。在 III 的合成中遇到副反应,其中涉及通过高碘酸盐或四乙酸铅氧化将该酸转化为内酯 (X) 和酸酐 (XI)。假定一种机制来解释 X 的形成。各种化合物的假定结构已通过核磁共振光谱研究得到证实。