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Isovaleric acid chloride

A somewhat different scheme is used to gain entry to the alternate symmetrical 1,3,4-thiadiazole ring system. Reaction of thiosemicarbazide with isovaleric acid affords the ring system (217) in one step. The reaction may be rationalized by positing acylation to intermediate 216 as the first step. Sulfonylation of the amino group of 217 with p-methoxybenzenesulfonyl chloride affords the oral... [Pg.272]

Methyl isovalerate, azeotropic mixtures with butyl alcohols, 4 395t Methyl ketones, acetic anhydride used in synthesis, 1 148 Methyllithium, 14 249 15 147 Methylmagnesium chloride, 16 319 (R)-(—)-Methylmandelic acid chloride, chiral derivatizing reagent, 6 76t Methyl mercaptan production, 15 17 3-Methylmercaptopropionaldehyde (MMP), intermediate in methionine synthesis, 1 268, 269, 276... [Pg.579]

Isovaleryl chloride (3-methylbutanoyl chloride). Use 34 g (0.4 mol) of isovaleric acid and 47 g (0.5 mol) of thionyl chloride. Proceed as for hexanoyl chloride the yield of isovaleryl chloride is 36 g (76%), b.p. 114-115°C, after distillation through a Vigreux column. [Pg.693]

Isovaleric acid, dry, 20, 106 Isovaleric acid monohydrate, 20, 106 Isovaleryl chloride, 24, 21... [Pg.56]

Hexafluorobutadiene Hydrogen bromide Hydrogen chloride Hydrogen sulfide Hydrocyanic acid Iodine pentafluoride Isovaleric acid Kendalite... [Pg.71]

Delpac 2000. See Polyaluminum chloride Delpet . See Polymethyl methacrylate Delphene m-Delphene. See Diethyl toluamide Delphinic acid. See Isovaleric acid... [Pg.1186]

Formation of the peptide bond via mixed or unsymmetrical anhydrides gained considerable popularity after their introduction in the early forties. These intermediates were constructed in such a way that the blocked amino acid is practically the sole acylating moiety while the acid which plays the role of activator is eliminated. Acetic acid or benzoic acid are not well suited for this role. A search for better solutions led to branched long-chain fatty acids, such as isovaleric acid (Vaughan and Osato 1951). In these mixed anhydrides (prepared via the acid chlorides) reactivity of the activating part of the anhydride... [Pg.58]

See other pages where Isovaleric acid chloride is mentioned: [Pg.2306]    [Pg.2306]    [Pg.1027]    [Pg.1027]    [Pg.1027]    [Pg.2306]    [Pg.2306]    [Pg.1027]    [Pg.1027]    [Pg.1027]    [Pg.1027]    [Pg.281]    [Pg.130]    [Pg.130]    [Pg.442]    [Pg.301]    [Pg.1077]    [Pg.96]    [Pg.58]    [Pg.574]    [Pg.82]    [Pg.57]    [Pg.158]    [Pg.348]    [Pg.442]    [Pg.2103]    [Pg.152]    [Pg.442]   


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Isovaleral

Isovalerate

Isovaleric

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