| 135485-71-1

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• CAS: 135485-71-1
• 化学式: C₁₆H₂₄NO₃
• 分子量: 278.371
• InChiKey: FZKKNBAJZYPXEG-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.72
• 重原子数：
  20.0
• 可旋转键数：
  3.0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.56
• 拓扑面积：
  49.44
• 氢给体数：
  0.0
• 氢受体数：
  3.0

反应信息

• 作为产物：
  描述：

  (Z)-N-benzylidene-2-methylpropan-2-amine oxide 、 pivaloxy radical 以 苯 为溶剂， 反应 0.05h， 生成
  参考文献：
  名称：

  Abe, Yukino; Seno, Shin-ya; Sakakibara, Kazuhisa, Journal of the Chemical Society. Perkin transactions II, 1991, # 6, p. 897 - 903

  摘要：

  DOI：

文献信息

• Generation of acyloxyl spin adducts from N-tert-butyl-α-phenylnitrone  † (PBN) and 4,5-dihydro-5,5-dimethylpyrrole 1-oxide (DMPO) via nonconventional mechanisms
  作者：Lennart Eberson、Ola Persson

  DOI：10.1039/a701479a

  日期：——

  The reaction between N-tert-butyl-α-phenylnitrone (PBN) and carboxylic acids has been studied. Two mechanisms are discernible: the generation of PBN˙+ by oxidation of PBN with a photochemically produced excited state [from either 2,4,6-tris(4-methoxyphenyl)pyrylium ion 2+ or tetrachlorobenzoquinone 4], followed by reaction with RCOOH, or the addition of RCOOH to PBN to give a hydroxylamine derivative, followed by thermal oxidation by a weak oxidant. The latter sequence is the Forrester–Hepburn mechanism. In this mechanism, neither 2+ nor 4 is effective as an oxidant, whereas bromine could be used. Thus only oxidants with redox potentials 0.1 V (SCE) are reactive enough to oxidize the intermediate hydroxylamine. This behaviour is in agreement with the redox reactivity of hydroxylamines.For the cyclic nitrone, 4,5-dihydro-5,5-dimethylpyrrole 1-oxide (DMPO), acyloxyl spin adducts have been prepared by the photochemical route.The reaction between dibenzoyl peroxide and PBN to give PhCOO–PBN˙ is not catalysed by added PhCOOH. It could be shown that the rate of formation of PhCOO–PBN˙ is compatible with the rate of thermal decomposition of dibenzoyl peroxide. Thus dibenzoyl peroxide does not support the Forrester–Hepburn mechanism, in agreement with its redox potential of ca. -0.2 V.

  N-叔丁基-α-苯基硝酮（PBN）与羧酸的反应已被研究。可以区分出两种机理：通过光化学产生的激发态氧化PBN生成PBN⁺+，随后与RCOOH反应，或者RCOOH加成到PBN上形成羟胺衍生物，随后由弱氧化剂热氧化。后一序列是Forrester-Hepburn机理。在该机理中，2+和4都不作为氧化剂有效，而溴可以被使用。因此，只有氧化还原电位大于0.1 V（SCE）的氧化剂才足以氧化中间体羟胺。这种行为与羟胺的氧化还原反应性一致。对于环状硝酮，4,5-二氢-5,5-二甲基吡咯1-氧化物（DMPO），通过光化学途径制备了酰氧基自由基自旋加合物。过二苯甲酰与PBN反应生成PhCOO⁻PBN⁺+不通过添加的PhCOOH催化。可以表明，PhCOO⁻PBN⁺+的生成速率与过二苯甲酰的热分解速率相符。因此，过二苯甲酰不支持Forrester-Hepburn机理，与其氧化还原电位约为-0.2 V一致。