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Chemical Reaction - Basic Chemical -

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  • Herz Reaction
  • Herz Reaction R. Herz, DE 360690 (1914 to Cassella & Co.); US 1637023 (1928); US 1699432 (1929). Formation of o-aminothiophenols by heating aromatic
  • HERON Rearrangement
  • HERON Rearrangement (Heteroatom Rearrangements on ) J. M. Buccigross et al., Aust. J. Chem. 48, 353 (1995); J. M. Buccigross, S. A. Glover, J. Chem. Soc. Perkin Trans. II
  • Henry Reaction
  • Henry Reaction (Nitroaldol Reaction) L. Henry, Compt. Rend. 120, 1265 (1895); J. Kamlet, US 2151517 (1939). Base-catalyzed aldol-type condensation, q.v.
  • Henkel Reaction
  • Henkel Reaction (Raecke Process, Henkel Process) B. Raecke, DE 936036 (1952) and DE 958920 (1952) to Henkel & Co. Industrial scale thermal rearrange
  • Hell-Volhard-Zelinsky Reaction
  • Hell-Volhard-Zelinsky Reaction C. Hell, Ber. 14, 891 (1881); J. Volhard, Ann. 242, 141 (1887); N. Zelinsky, Ber. 20, 2026 (1887). α-Halogenation o
  • Helferich Method
  • Helferich Method B. Helferich, E. Schmitz-Hillebrecht, Ber. 66, 378 (1933). Glycosidation of an acetylated sugar by heating with a phenol in the presenc
  • Heck Reaction
  • Heck Reaction R. F. Heck, J. P. Nolley, Jr., J. Org. Chem. 37, 2320 (1972). Stereospecific palladium-catalyzed coupling of alkenes with organic halides
  • Hayashi Rearrangement
  • Hayashi Rearrangement M. Hayashi, J. Chem. Soc. 1927, 2516; 1930, 1513, 1520, 1524. Rearrangement of o-benzoylbenzoic acids in the presence of sulfuric
  • Haworth Phenanthrene Synthesis
  • Haworth Synthesis R. D. Haworth, J. Chem. Soc. 1932, 1125, 2717, idem et al., ibid. 1784, 2248, 2720; 1934, 454. Preparation of phenanthrenes from naph
  • Haworth Methylation
  • Haworth Methylation W. N. Haworth, J. Chem. Soc. 107, 13 (1915). Formation of methylated methyl glycosides from monosaccharides with dimethyl sulfate an
  • Sommelet-Hauser Rearrangement
  • Sommelet-Hauser Rearrangement M. Sommelet, Compt. Rend. 205, 56 (1937). Rearrangement of benzyl quaternary ammonium salts to ortho substituted benzyldia
  • Harries Ozonide Reaction
  • Harries Ozonide Reaction (Ozonolysis) C. Harries, Ann. 343, 311 (1905). Treatment of olefins with ozone as a method of cleaving olefinic linkages. On hy
  • Hantzsch Pyrrole Synthesis
  • Hantzsch Pyrrole Synthesis A. Hantzsch, Ber. 23, 1474 (1890). Formation of pyrrole derivatives from α-chloromethyl ketones, β-keto esters and
  • Hantzsch Dihydropyridine Synthesis
  • Hantzsch Synthesis ( Synthesis) A. Hantzsch, Ann. 215, 1, 72 (1882); Ber. 18, 1744 (1885); 19, 289 (1886). Synthesis of dihydropyridines by condensatio
  • Hammick Reaction
  • Hammick Reaction P. Dyson, D. L. Hammick, J. Chem. Soc. 1937, 1724. Decarboxylation of α-picolinic or related acids in the presence of carbonyl co
  • Lieben Iodoform Reaction
  • Lieben Iodoform Reaction (Haloform Reaction) A. Lieben, Ann. (Suppl.) 7, 218 (1870). Cleavage of methyl ketones with halogens (mostly iodine) and base t
  • Koch-Haaf Carboxylations
  • Koch-Haaf Carboxylations H. Koch, Brennstoff Chem. 36, 321 (1955); H. Koch, W. Haaf, Ann. 618, 251 (1958). Formation of tertiary carboxylic acids by tre
  • Vilsmeier-Haack Reaction
  • Vilsmeier-Haack Reaction A. Vilsmeier, A. Haack, Ber. 60, 119 (1927). Formylation of activated aromatic or heterocyclic compounds with disubstituted for
  • Gutknecht Pyrazine Synthesis
  • Gutknecht Pyrazine Synthesis H. Gutknecht, Ber. 12, 2290 (1879); 13, 1116 (1880). Cyclization of α-amino ketones, produced by reduction of isonitr
  • Guerbet Reaction
  • Guerbet Reaction M. Guerbet, Compt. Rend. 128, 511 (1899). Condensation of 1° or 2° alcohols at high temperature and pressure in the presence of
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