Arylboronic Acids. V. Methyl-substituted Boronic Acids, Borinic Acids and Triarylborons<sup>1,2</sup>
作者:Richard T. Hawkins、William J. Lennarz、H. R. Snyder
DOI:10.1021/ja01497a020
日期:1960.6
noted. Under mild conditions, dimesityleneboronic acid is not dehydrated nor is the anhydride hydrated to the acid. Trimesitylboron is nitrated to yield a hexanitro derivative. 2-Mesityl- 1,3-dihydro-2, 1, 3-benzoboradiazole, prepared from mesityleneboronic acid and o- phenylenediamine, is shown to be more resistant to cleavage by hydrochloric acid than is the 2-phenyl homolog. The preparation of
制备和研究了许多带有邻和对甲基取代基的芳基硼化合物。2,6-二甲基苯硼酸酐通过分子量测定显示为三聚体,而均三甲苯硼酸酐是二聚体,为此提出了四元硼-氧环。前者产生与吡啶的配合物,但仅注意到吡啶-均三甲苯硼酸酐配合物的光谱证据。在温和条件下,二亚甲基硼酸不会脱水,酸酐也不会水合成酸。三苯甲基硼硝化产生六硝基衍生物。由均三甲苯硼酸和邻苯二胺制备的 2-Mesityl-1,3-dihydro-2,1,3-benzoboradiazole 显示出比 2-苯基同系物更耐盐酸裂解。报道了 6methylboronophthalide 的制备和芳基硼化合物的一些质子磁共振研究。(授权)