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  • 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
  • Guareschi-Thorpe Condensation
  • Guareschi-Thorpe Condensation I. Guareschi, Mem. Reale Accad. Sci. Torino II, 46, 7, 11, 25 (1896); H. Baron, et al., J. Chem. Soc. 85, 1726 (1904). Syn
  • Grundmann Aldehyde Synthesis
  • Grundmann Aldehyde Synthesis C. Grundmann, Ann. 524, 31 (1936). Transformation of an acid into an aldehyde of the same chain length by conversion of the
  • Grob Fragmentation
  • Grob Fragmentation C. A. Grob, W. Baumann, Helv. Chim. Acta 38, 594 (1955). -carbon bond cleavage primarily via a concerted process involving a five ato
  • Grignard Reaction
  • Grignard Reaction V. Grignard, Compt. Rend. 130, 1322 (1900). Traditionally, it is the addition of organomagnesium compounds (Grignard reagents) to carb
  • Grignard Degradation
  • Grignard Degradation W. Steinkopf et al., Ann. 512, 136 (1934); 543, 128 (1940). Stepwise dehalogenation of a polyhalo compound through its Grignard rea
  • Griess Diazo Reaction
  • Griess Diazo Reaction; Witt and Knoevenagel Diazotization Methods P. Griess, Ann. 106, 123 (1858); 121, 257 (1862); E. Knoevenagel, Ber. 23, 2994 (1890); O. N. Witt, ibid.
  • Graebe-Ullmann Synthesis
  • Graebe-Ullmann Synthesis C. Graebe, F. Ullmann, Ann. 291, 16 (1896); F. Ullmann, ibid. 332, 82 (1904). Formation of carbazoles by the action of nitrous
  • Gould-Jacobs Reaction
  • Gould-Jacobs Reaction R. G. Gould, W. A. Jacobs, J. Am. Chem. Soc. 61, 2890 (1939). Synthesis of 4-hydroxys from anilines and diethyl ethoxymalonate via
  • Gomberg Free Radical Reaction
  • Gomberg Free Radical Reaction M. Gomberg, J. Am. Chem. Soc. 22, 757 (1900). Formation of free radicals by abstraction of the halogen from triarylmethyl
  • Jourdan-Ullmann-Goldberg Synthesis
  • Jourdan-Ullmann-berg Synthesis F. Jourdan, Ber. 18, 1444 (1885); F. Ullmann, ibid. 36, 2382 (1903); I. Goldberg, ibid. 39, 1691 (1906); 40, 4541 (1907).
  • Gattermann-Koch Reaction
  • Gattermann-Koch Reaction L. Gattermann, J. A. Koch, Ber. 30, 1622 (1897); L. Gattermann, Ann. 347, 347 (1906). Formylation of benzene, alkylbenzenes or
  • Gattermann Aldehyde Synthesis
  • Gattermann Aldehyde Synthesis L. Gattermann, Ber. 31, 1149 (1898); Ann. 313, (1907). Preparation of phenolic aldehydes, phenol ethers or heterocyclic co
  • Pictet-Gams Isoquinoline Synthesis
  • Pictet-Gams Synthesis A. Pictet, A. Gams, Ber. 43, 2384 (1910). Formation of isoquinolines by cyclization of acylated aminomethyl phenyl carbinols or t
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