Hofmann Reaction A. W. Hofmann, Ber. 14, 2725 (1881). Conversion of primary carboxylic amides to primary amines with one fewer carbon atom upon treatmen

Houben-Hoesch Reaction K. Hoesch, Ber. 48, 1122 (1915); J. Houben, ibid. 59, 2878 (1926). Synthesis of acylphenols from phenols or phenolic ethers by th

Nozaki-Hiyama Coupling Reaction (Nozaki-Hiyama-Kishi Reaction) Y. Okude et al., J. Am. Chem. Soc. 99, 3179 (1977); K. Takai et al., Tetrahedron Letters 24, 5281 (1983).

Hinsberg Synthesis of Derivatives O. Hinsberg, Ber. 43, 901 (1910). Formation of thiophene carboxylic acids from α-diketones and dialkyl thiodiac

Hinsberg Sulfone Synthesis O. Hinsberg, Ber. 27, 3259 (1894); 28, 1315 (1895). Formation of sulfonylquinol derivatives by addition of quinones to cold d

Hinsberg and Oxiquinoline Synthesis O. Hinsberg, Ber. 21, 110 (1888); 25, 2545 (1892); 41, 1367 (1908). Formation of oxindoles from secondary aryl amin

Hilbert-Johnson Reaction T. B. Johnson, G. E. Hilbert, Science 69, 579 (1929); G. E. Hilbert, T. B. Johnson, J. Am. Chem. Soc. 52, 2001, 4489 (1930). Re

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 (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 (Nitroaldol Reaction) L. Henry, Compt. Rend. 120, 1265 (1895); J. Kamlet, US 2151517 (1939). Base-catalyzed aldol-type condensation, q.v.

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 C. Hell, Ber. 14, 891 (1881); J. Volhard, Ann. 242, 141 (1887); N. Zelinsky, Ber. 20, 2026 (1887). α-Halogenation o

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 R. F. Heck, J. P. Nolley, Jr., J. Org. Chem. 37, 2320 (1972). Stereospecific palladium-catalyzed coupling of alkenes with organic halides

Hayashi Rearrangement M. Hayashi, J. Chem. Soc. 1927, 2516; 1930, 1513, 1520, 1524. Rearrangement of o-benzoylbenzoic acids in the presence of sulfuric

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 W. N. Haworth, J. Chem. Soc. 107, 13 (1915). Formation of methylated methyl glycosides from monosaccharides with dimethyl sulfate an

Sommelet-Hauser Rearrangement M. Sommelet, Compt. Rend. 205, 56 (1937). Rearrangement of benzyl quaternary ammonium salts to ortho substituted benzyldia

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 A. Hantzsch, Ber. 23, 1474 (1890). Formation of pyrrole derivatives from α-chloromethyl ketones, β-keto esters and