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    • 7. 发明授权
    • Process for the preparation of stable nitroxyl radicals
    • 制备稳定硝酰自由基的方法
    • US07982052B2
    • 2011-07-19
    • US12161283
    • 2007-02-09
    • Maria CaldararoRiccardo Po'Marco Ricci
    • Maria CaldararoRiccardo Po'Marco Ricci
    • C07D209/44
    • C07D209/46
    • Process for the preparation of stable nitroxyl radicals (I) starting from N-benzylphthalimide in two steps. In the first step, the intermediate N-benzyl-1,1,3,3-tetra-alkylisoindoline is prepared by treatment with a Grignard reagent, prepared in methyl-tert-butyl ether, of N-benzylphthalimide, obtained in the same reaction environment starting from phthalic anhydride and benzylamine. In the second step, the N-benzyl-1,1,3,3-tetra-alkylisoindoline is transformed into the nitroxyl radical by hydrogenolysis and subsequent oxidation with hydrogen peroxide in the presence of a catalyst selected from acids and salts of polymolybdic or polytungstic acids.
    • 从N-苄基邻苯二甲酰亚胺开始制备稳定的硝酰基(I)的方法分两步进行。 在第一步中,中间体N-苄基-1,1,3,3-四烷基异吲哚啉通过用在相同反应中获得的N-苄基邻苯二甲酰亚胺的甲基叔丁基醚中制备的格氏试剂进行处理 环境从邻苯二甲酸酐和苄胺开始。 在第二步中,N-苄基-1,1,3,3-四烷基异吲哚啉通过氢解反应转化为硝酰基,随后在选自酸和多钼或多元酸的盐的催化剂存在下用过氧化氢氧化 酸。