Abstract
Manganese(III) complexes of 5-(p-aminophenyl)-10,15,20-triphenylporphyrin, 2-(2-carboxyvinyl)-5, 10,15,20-tetraphenylporphyrin, and their derivatives containing electron-donor and electron-acceptor substituents have been synthesized. Manganese(III) porphyrinates (PMn) are catalytically active in the stereoselective hydroxylation of cholesterol to form 3β,5α-cholestanediol. The influence of substitutents in the porphyrin ring on the ability of PMn to associate in solution, the hydroxylation rate constants, and the turnover number of the catalyst are discussed.
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Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 9, pp. 1656–1660, September, 1994.
The present work was financially supported by the Russian Foundation for Basic Research (Projects No. 94-03-08070 and 93-03-18307).
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Evstigneeva, R.P., Gribkova, S.E., Luzgina, V.N. et al. Synthesis and catalytic properties of manganese complexes of substituted tetraphenylporphyrins in the stereoselective hydroxylation of cholesterol. Russ Chem Bull 43, 1568–1571 (1994). https://doi.org/10.1007/BF00697151
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DOI: https://doi.org/10.1007/BF00697151