- Piloty-Robinson Synthesis
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Piloty-Robinson Synthesis
O. Piloty, Ber. 43, 489 (1910); G. M. Robinson, R. Robinson, J. Chem. Soc. 43, 639 (1918).
Formation of pyrroles by heating azines of enolizable ketones with acid catalysts, usually zinc chloride or hydrogen chloride:
Review: N. V. Sidgwick, Organic Chemistry of Compounds (Oxford, 3rd ed., 1966) pp 619-641; H. Posvic et al., J. Org. Chem. 39, 2575 (1974). Cf. Borsche-Drechsel Cyclization; Fischer Synthesis.
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