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    • 7. 发明授权
    • Nucleophilic displacement process for preparing
2,6-dihydrocarbonyl-4-(nitroaryl)phenol
    • 制备2,6-二氢羰基-4-(硝基芳基)苯酚的亲核取代方法
    • US4582947A
    • 1986-04-15
    • US705903
    • 1985-02-26
    • G. Patrick Stahly
    • G. Patrick Stahly
    • C07C205/20C07C79/22C07C79/24
    • C07C201/12
    • 2,6-Dihydrocarbyl-4-(nitroaryl)phenols are prepared by reacting (1) a nitroaromatic compound bearing a displaceable substituent selected from nitro and phenylsulfonyl on a ring carbon which is adjacent to, or separated by two ring atoms from, the ring carbon bearing the nitro substituent with (2) a 2,6-dihydrocarbylphenol selected from 2,6-di-t-butyl- , 2,6-di-t-amyl-, 2-t-butyl-6-isopropyl-, and 2,6-diphenylphenols having a replaceable hydrogen in the 4-position in an inert solvent and in the presence of a strong base. The preferred nitroaromatic compounds are 1,2- and 1,4-dinitrobenzenes, 1-nitro-2-phenylsulfonylbenzenes, and 1-nitro-4-phenylsulfonylbenzenes; and a preferred phenol is 2,6-di-t-butylphenol.
    • 2,6-二烃基-4-(硝基芳基)苯酚是通过使(1)含有选自硝基和苯基磺酰基的可置换取代基的硝基芳族化合物与环上相邻或由两个环原子分开的环碳 带有硝基取代基的碳与(2)选自2,6-二叔丁基,2,6-二叔戊基,2-叔丁基-6-异丙基, 和在惰性溶剂中和在强碱存在下在4-位上具有可置换氢的2,6-二苯基苯酚。 优选的硝基芳族化合物是1,2-和1,4-二硝基苯,1-硝基-2-苯基磺酰基苯和1-硝基-4-苯基磺酰基苯; 优选的苯酚是2,6-二叔丁基苯酚。