Reactions of diosphenol and 3,6-dimethyl-1,2-cyclohexanedione with iodine-copper(II) acetate in acetic acid-water (5:1) at 80 °C gave the respective 3-hydroxy-2,5-dialkyl-1,4-benzoquinone in 25–80% yields. 2-t-Butyl-5-methylcyclohexanone similarly gave the corresponding 3-hydroxy-1,4-benzoquinone in 66% yield.
One-pot anodic lactonization of Fenchone and Menthone and electrosynthesis of a new magnolione analogue
作者:Belen Batanero、Javier Recio、Fructuoso Barba
DOI:10.1016/j.elecom.2016.02.018
日期:2016.5
The terpenoid cycloalkanones Fenchone and Menthone have been oxidized at a platinum anode under neutral and alkaline electrolyte conditions. When NaClO4 was used as electrolyte, Fenchone (1a) afforded 1-isopropyl-4-methyl-2-oxa-bicyclo[2.2.1]heptan-3-one, and Menthone (1b) provided the stable lactone 6-isobutyl-4-methyl-tetrahydropyran-2-one, both in good yield. When using Na2CO3 as electrolyte, the
所述萜类化合物环烷酮葑酮和薄荷酮已经在中性和碱性电解质的条件下,铂阳极被氧化。当将NaClO 4用作电解质时,Fenchone(1a)提供了1-异丙基-4-甲基-2-氧杂-双环[2.2.1]庚基-3-酮,而Menthone(1b)提供了稳定的内酯6-异丁基- 4-甲基-四氢吡喃-2-酮,均收率高。当使用Na 2 CO 3作为电解质时,1a的氧化仅在一个锅中就得到了芳香类似物2,2-二甲基-3-(2-氧丙基)环戊酮。提出了机制建议。
A facile procedure for oxidative cleavage of enolic olefins to the carbonyl compounds with ruthenium tetroxide (RuO4)
作者:Sigeru Torii、Tsutomu Inokuchi、Kazumi Kondo
DOI:10.1021/jo00224a071
日期:1985.11
Wagner, Chemische Berichte, 1894, vol. 27, p. 1639
作者:Wagner
DOI:——
日期:——
Tolloczko, Zhurnal Russkago Fiziko-Khimicheskago Obshchestva, 1897, vol. 29, p. 46