- Metal-free homocoupling of 2,2-(Arylmethylene)-bis(3-hydroxy-5,5- dimethylcyclohex-2-enone) mediated by n-methylhydroxylamine
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The reaction of 5,5-dimethylcyclohexane-1,3-dione with an acyclic nitrone in DMF or acetone affords a 1:1 mixture of dimer 2,2-(arylmethylene)-bis(3- hydroxy-5,5-dimethylcyclohex-2-enone) and tetramer 2,2',2'',2'''-(1,2- diarylethane-1,1,2,2-tetrayl)tetrakis(3-hydroxy-5,5-dimethyl-cyclohex-2-enone). This unprecedented type of metal-free homocoupling of two molecules of the dimer to furnish the tetramer is believed to proceed via an oxidation/reduction process involving N-methylhydroxylamine.
- Lasri, Jamal
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p. 482 - 489
(2013/08/23)
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