The oxygenation of 4-alkynyl-2,6-di-t-butylphenols (1) promoted by Co(Salpr) resulted in the dioxygen incorporation predominantly into the side chain, whereas in the oxygenation of 1 with t-BuOK in t-BuOH dioxygen was incorporated exclusively into the ortho position. The results are rationalized by a radical process in the former reaction and a nonradical process in the latter oxygenation.
在 Co(Salpr)的促进下,4-炔基-
2,6-二叔丁基苯酚(1)的加氧反应导致二氧主要掺入侧链,而在叔丁氧羰基
苯酚(1)与叔丁氧羰基
苯酚(t-BuOK)在叔丁氧中的加氧反应中,二氧只掺入正交位置。前一个反应中的自由基过程和后一个加氧反应中的非自由基过程使结果合理化。