Journal of Organic Chemistry p. 5008 - 5011 (1989)
Update date:2022-08-16
Topics:
Labat, Gilles
Meunier, Bernard
An efficient ligninase model based on the association of potassium monopersulfate to iron and manganese porphyrin in solution or immobilized onto an ion-exchange resin is reported.High catalytic conversion of veratryl alcohol or 1-(3,4-dimethoxyphenyl)-2-(2-methoxyphenoxy)propane-1,3-diol, a useful model molecule for checking the ability of cleaving Cα-Cβ bonds of arylglycerol-β-aryl ether linkages existing in lignin itself, is obtained at room temperature in a single-phase solution (buffered water/acetonitrile, 75/25, v/v) at pH 2-3 for iron porphyrin or at pH 4.5-6.0 for manganese porphyrin.The porphyrin ligand used in the present study is the meso-tetrakis(p-sulfonatophenyl)porphyrin (TPPS).Catalytic activities can be as high as eight cycles per second.
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