Chemistry of Heterocyclic Compounds p. 869 - 871 (1981)
Update date:2022-08-11
Topics:
Borisova, L. N.
Rozenberg, S. G.
Kucherova, N. F.
Zagorevskii, V. A.
A new method for the reduction of benzofurans with potassium and sodium borohydrides in CF3COOH was developed.It is shown by gas-liquid chromatography and PMR spectroscopy that mixtures (ca. 2:3) of the cis and trans isomers of dihydro derivatives of benzofuran are formed in the reduction.The mechanism of the reduction includes intermolecular transfer of a hydride ion to the protonated form of the benzofuran.
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Doi:10.1111/1471-6402.t01-2-00073
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