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Carboxvlic acids

The malonic ester synthesis can also be used to prepare cydoalkane-carboxvlic acids. For example, when 1,4-dibromobutanc is treated with diethyl malonate in the presence of 2 equivalents of sodium ethoxide base, the second alkylation step occurs intrcunotecidariy to yield a cyclic product. Hydrolysis and decarboxylation then give cvclopentanecarboxylic acid. Three-, four-, five-. [Pg.857]

In concentrated solution 7-methylisatin-4-carboxvlic acid exhibits normal carboxylic acid dimerization, but in the solid state the lactol form 58 is present.228 Infrared studies indicate that hydrogen bonding as shown in 59 best represents the structure and mode of association of... [Pg.19]

Hydracrylic acid or -hydroxy-propionic acid A hydroxymono-carboxvlic acid... [Pg.294]

Maleic anhydride condenses with 2-aminothiazole-4-carboxvlic acid giving the maleimide 107 (269) another report claims, however, that the reaction of 2-amino-4-methylthiazole with this anhydride gives the N-substituted maleamic acid (108) (Scheme 73) (270). [Pg.33]

Nitriles are analogous to carboxylic acids in that both have a carbon atom with three bonds to an electronegative atom, and both contain a n bond. Thus, some reactions of nitriles and carboxvlic acids are similar. Both kinds of... [Pg.765]

Phosphoric acid anhydride (Section 29.1) A substance that contains PO2PO link, analogous to the CO2CO link in carboxvlic acid anhydrides. [Pg.1247]

Conversion of Amides into Amines Reduction Like other carboxylic acid derivatives, amides can be reduced by LiAlH4. The product of the reduction, however, is an amine rather than an alcohol. The net effect of an amide reduction reaction is thus the conversion of the amide carbonyl group into a methylene group (C=0 — CH2). This kind of reaction is specific for amides and does not occur with other carboxvlic acid derivatives. [Pg.815]

Carboxvlic Acid Formation. Reimer-Tiemann Reaction... [Pg.88]

Chemical Name 6-<[amino-(4-hvdroxvphenvl)acetvl] amino>-3,3-dimethvl-7-oxo-4-thia-1-azabicvclo[3.2.0] heptane-2-carboxvlic acid... [Pg.78]

The 3-o-chlorophenvl-5-methylisoxazole-4-carboxvlic acid, from which the acid chloride was prepared, was obtained by hydrolysis of the ester product of the reaction between o-chloro-benzohydroxamicchlorideand ethyl acetoacetate in methanolic sodium methoxide. Reaction with thionyl chloride gave the starting material. [Pg.386]

Section 23 Carboxvlic Acids and Acid Halides from Esters... [Pg.42]

DL-1.3-Thiazolidene-4-carboxvlic acid (thiaproline) (Other values in Vol.5, p.40)... [Pg.39]

C5H4O3 Oxole-2-carboxvlic acid ( 2-furoic acid) HL... [Pg.322]

C5H402S Thiole-2 -carboxvlic acid (2- thenoic acid)... [Pg.324]

See other pages where Carboxvlic acids is mentioned: [Pg.156]    [Pg.168]    [Pg.574]    [Pg.149]    [Pg.46]    [Pg.815]    [Pg.1061]    [Pg.357]    [Pg.545]    [Pg.144]    [Pg.371]    [Pg.373]    [Pg.967]    [Pg.956]    [Pg.889]    [Pg.621]    [Pg.621]    [Pg.281]    [Pg.61]    [Pg.283]    [Pg.508]    [Pg.230]    [Pg.1142]    [Pg.1266]    [Pg.1344]    [Pg.39]   
See also in sourсe #XX -- [ Pg.321 , Pg.326 , Pg.338 ]



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