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Tetrahydric alcohol

The tetrahydric alcohols (233) react with As(NMc2)3 in THF yielding the cage compounds (234)-... [Pg.1103]

Pentaerythritol (10 to 20 mg t.i.d.), a nitric acid ester of a tetrahydric alcohol, is indicated in the relief of angina pectoris and pain associated with coronary artery disease. It is not intended to abort the acute anginal episode but is widely regarded as useful in the prophylactic treatment of angina pectoris (see Figure 69). [Pg.557]

Erythritol n H(CHOH)4H. Tetrahydric alcohol. Properties mp, 112°C bp, 330°C. lUPAC Name Butane-1, 2, 3, 4-tetraol. [Pg.274]

The tetrahydric alcohol, erythritol, (CLXVII) is found in algae, fungi and lichens, and the pentahydric alcohol, adonitol, (CLXVIII) occurs in Adonis vernalis. A number of the hexitols, particularly D-mannitol (CLXIX), and D-sorbitol (CLXX) are widely distributed in the vegetable kingdom . ... [Pg.45]

Iron(II) fluoride tetrahydrate [13940-89-17, Fep2 4H2O, is prepared by dissolving iron metal ia warm hydrofluoric acid and precipitating with ethanol. The stmcture of the soHd consists of discrete [FeF2(H20)4] octahedra ia which F and H2O are randomly distributed over the possible sites. The white sohd turns brown ia air and decomposes at 100°C. It is slightly soluble ia water, alcohol, and ether and is soluble ia dilute acid. [Pg.436]

Barium hydro sulfide [25417-81-6], Ba(HS)2, is formed by absorption of hydrogen sulfide into barium sulfide solution. On addition of alcohol, barium hydrosulfide tetrahydrate [12230-74-9], Ba(HS)2 4H2O, crystallizes as yellow rhombic crystals that decompose at 50 °C. Sohd barium hydro sulfide is very unstable. Its solubility in water is... [Pg.480]

Bismuth tribromide may be prepared by dissolving Bi O in excess concentrated hydrobromic acid. The slurry formed is allowed to dry in air, then gendy heated in a stream of nitrogen to remove water, and finally distilled in a stream of dry nitrogen. Bismuth tribromide is soluble in aqueous solutions of KCl, HCl, KBr, and KI but is decomposed by water to form bismuth oxybromide [7787-57-7] BiOBr. It is soluble in acetone and ether, and practically insoluble in alcohol. It forms complexes with NH and dissolves in hydrobromic acid from which dihydrogen bismuth pentabromide tetrahydrate [66214-38-8] H2BiBr 4H2O, maybe crystallized at —lO C. [Pg.129]

The complexes [Ru(bpy)2L]+ (HL = acetylacetone, trifluoroacetylacetone, hexafluoroacetylace-tone, tropolone or dibenzoylmethane) have been prepared and characterized they act as catalysts for the oxidation of alcohols, 3,5-di-tert-butylcatechol and alkanes in the presence of appropriate co-oxidants." Perchlorate salts of [Os(bpy)2L] in which HL = salicylaldehyde, 2-hydroxyaceto-phenone or 2-hydroxynaphthaldehyde, are formed from reactions of [Os(bpy)2Br2] with HL. The structure of the salicylaldehyde derivative has been determined. Chemical and electrochemical oxidations of [Os(bpy)2L]" yield the corresponding low-spin Os species from which [Os(bpy)2L]+ can be regenerated." " [Ru(bpy)2L]" (HL = salicylic acid) has been prepared and structurally characterized as the tetrahydrate. Absorptions at 590 nm, 400 nm, and 290 nm in the electronic spectrum have been assigned to Ru bpy CT transitions electrochemical oxidations of the complex have been investigated." ... [Pg.588]

Colorless crystalline solid tetragonal crystal system hygroscopic density 2.50 g/cm3 (tetrahydrate 1.71 g/cm ) tetrahydrated salt loses water of crystallization on heating further heating to 550°C causes decomposition soluble in water, tetrahydrate more soluble in water (30.5g/100g at 30°) than the anhydrous salt insoluble in alcohol. [Pg.106]

Tetrahydrate is golden yellow monoclinic crystals hygroscopic density 3.9 g/cm3 decomposes on strong heating very soluble in water and alcohol soluble in ether. [Pg.326]

The tetrahydrate is a green crystalline solid sweet taste odor of acetic acid density 1.744 g/cm loses water on heating to form a yellow-green powder of anhydrous nickel acetate decomposes above 250 C soluble in water, 17g/100mL at 20 C sparingly soluble in alcohol. [Pg.609]

SAMP-Hydrazones derived from ketones may also be cleaved by treatment with three equivalents of sodium perborate tetrahydrate at pH 7 in water/rert-butyl alcohol at 60 °C. Hydrolysis of aliphatic derivatives is effected in 4-24 hours and reactions yielding aromatic ketones proceed within 2- 3 days. This cleavage reaction furnishes the desired ketones chemoselectively in the presence of olefinic double bonds in 85-95% yield (cyclopentanone 70% yield)30. [Pg.1011]

See other pages where Tetrahydric alcohol is mentioned: [Pg.582]    [Pg.61]    [Pg.291]    [Pg.139]    [Pg.171]    [Pg.627]    [Pg.1165]    [Pg.177]    [Pg.38]    [Pg.452]    [Pg.611]    [Pg.168]    [Pg.171]    [Pg.367]    [Pg.39]    [Pg.201]    [Pg.139]    [Pg.582]    [Pg.61]    [Pg.291]    [Pg.139]    [Pg.171]    [Pg.627]    [Pg.1165]    [Pg.177]    [Pg.38]    [Pg.452]    [Pg.611]    [Pg.168]    [Pg.171]    [Pg.367]    [Pg.39]    [Pg.201]    [Pg.139]    [Pg.214]    [Pg.436]    [Pg.438]    [Pg.205]    [Pg.395]    [Pg.377]    [Pg.719]    [Pg.394]    [Pg.581]    [Pg.55]    [Pg.145]    [Pg.516]    [Pg.1011]    [Pg.342]    [Pg.349]    [Pg.354]    [Pg.400]    [Pg.409]    [Pg.489]   
See also in sourсe #XX -- [ Pg.38 ]

See also in sourсe #XX -- [ Pg.37 ]



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