2-Benzylpyrroles (5a–h) can be prepared in high yield from pyrroles by reduction, with modified borohydride reagents, of the corresponding 1-azafulvenium salts (3a–h) generated in situ in the presence of excess of phosphoryl trichloride. The procedure is compatible with ester groups.
G. McGillivray and E. Smal, J. Chem. Soc., Perkin Trans. 1, 1983, 633 DOI: 10.1039/P19830000633
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