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  • Pellizzari Reaction
  • Pellizzari Reaction G. Pellizzari, Gazz. Chim. Ital. 41, II, 20 (1911). Formation of substituted 1,2,4-triazoles by the condensation of amides and acyl
  • Pechmann Pyrazole Synthesis
  • Pechmann Synthesis H. v. Pechmann, Ber. 31, 2950 (1898). Formation of pyrazoles from acetylenes and diazomethane. The analogous addition of diazoacetic
  • Pechmann Condensation
  • Pechmann Condensation H. v. Pechmann, C. Duisberg, Ber. 16, 2119 (1883). Synthesis of coumarins by condensation of phenols with β-keto esters in th
  • Payne Rearrangement
  • Payne Rearrangement G. B. Payne, J. Org. Chem. 27, 3819 (1962). Base-promoted isomerization of 2,3-epoxyalcohols. Configuration at C-2 is inverted:
  • Passerini Reaction
  • Passerini Reaction M. Passerini, Gazz. Chim. Ital. 51, 126, 181 (1921). Formation of α-hydroxycarboxamides on treatment of an isonitrile with a ca
  • Parham Cyclization
  • Parham Cyclization W. E. Parham et al., J. Org. Chem. 40, 2394 (1975). Four- to seven-membered ring annulation of aryl bromides bearing ortho side chain
  • Overman Rearrangement
  • Overman Rearrangement L. E. Overman, J. Am. Chem. Soc. 96, 597 (1974); 98, 2901 (1976). Formal [3,3]-sigmatropic rearrangement of the trichloroacetimida
  • Oppenauer Oxidation
  • Oppenauer Oxidation R. V. Oppenauer, Rec. Trav. Chim. 56, 137 (1937). The aluminum or potassium alkoxide-catalyzed oxidation of a secondary alcohol to t
  • Peterson Reaction
  • Peterson Reaction (Olefination) D. J. Peterson, J. Org. Chem. 33, 780 (1968). Reaction of α-silyl carbanions with carbonyl compounds yielding &bet
  • Olefin Metathesis
  • Olefin Metathesis -carbon bond rearrangements in presence of metal carbene catalyst complexes especially those of molybdenum and ruthenium:
  • Noyori Hydrogenation
  • Noyori ation T. Ikariya et al., Chem. Commun. 1985, 922; R. Noyori et al., J. Am. Chem. Soc. 108, 7117 (1986). Homogeneous asymmetric catalytic hydrogen
  • Norrish Type Cleavage
  • Norrish Type Cleavage R. G. W. Norrish, C. H. Bamford, Nature 138, 1016 (1936); 140, 195 (1937). Norrish Type I Cleavage: Homolytic cleavage of aldehyde
  • Nierenstein Reaction
  • Nierenstein Reaction D. A. Clibbens, M. Nierenstein, J. Chem. Soc. 107, 1491 (1915). Formation of ω-chloroacetophenones by reaction of diazomethan
  • Niementowski Quinoline Synthesis
  • Niementowski Synthesis S. v. Niementowski, Ber. 27, 1394 (1894); 28, 2809 (1895); 38, 2044 (1905); 40, 4285 (1907). Formation of γ-hydroxyquinoli
  • Niementowski Quinazoline Synthesis
  • Niementowski Synthesis S. v. Niementowski, J. Prakt. Chem. [2] 51, 564 (1895). Formation of 4-oxo-3,4-dihydroquinazolines by cyclization of the reactio
  • Nicholas Reaction
  • Nicholas Reaction R. F. Lockwood, K. M. Nicholas, Tetrahedron Letters 1977, 4163. The reaction of dicobalthexacarbonyl-stabilized propargyl cations with
  • Nenitzescu Reductive Acylation
  • Nenitzescu Reductive Acylation C. D. Nenitzescu, E. Cioranescu, Ber. 69, 1820 (1936). ative acylation of cycloolefins with acid chlorides in the presenc
  • Nenitzescu Indole Synthesis
  • Nenitzescu Synthesis C. D. Nenitzescu, Bull. Soc. Chim. Romania 11, 37 (1929). Synthesis of 5-hydroxyindole derivatives by condensation of with β
  • Nencki Reaction
  • Nencki Reaction M. Nencki, N. Sieber, J. Prakt. Chem. (2) 23, 147 (1881). The ring acylation of phenols with acids in the presence of zinc chloride, or
  • Negishi Cross Coupling
  • Negishi Cross Coupling E. Negishi et al., J. Org. Chem. 42, 1821 (1977). Formation of unsymmetric biaryls by cross coupling arylhalides with arylzinc re
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