6- Alkylsalicylic acids

The 22 1 co5 anacardic acid (6-alkylsalicylic acid) of insect- and mite-resistant geranium... 

The mechanism of the first and second stages seems likely to be as shown although other pathways may also be feasible. By the use of basic copper salts of 2-alkylbenzoic acids and the use of high boiling solvents such as nitrobenzene, 6-alkylsalicylic acids are obtained (ref.20). 

Anacardic acids are 6-alkylsalicylic acids with different alkyl chain lengths and degrees of unsaturation. Cashew is the most important natural source of anacardic acids. Anacardic acids are found not only in cashew nut shell oil, but also in the nut and fruit juice made from cashew apple [20]. Anacardic acids are relatively nonpolar hydrophobic substances. Their structures are illustrated in Figure 10.1. They are insoluble in water, but well soluble in organic solvents such as ethanol or dimethyl sulfoxide (up to lOmg/mL). The cardanols might be formed by thermal decarboxylation of the anacardic acids [19]. 

Basic compound To neutralise strong mineral acids (from fuels) Barium or basic calcium salts of sulphonic acids and alkylsalicylic acid. Superbasic and hyperbasic additives are basic salts with a large excess of base... 

Preston, J. S. duPreez, A. C. The solvent extraction of nickel from acidic solutions using synergistic mixtures containing pyridinecarboxylate esters. 2. Systems based on alkylsalicylic acids. J. Chem. Technol. Biotechnol. 1996, 66, 293-299. 

Liu, B. Huang, Y Li, H. Novel preparation process for alkylsalicylic acid alkaline earth salt. Faming Zhuanli Sbenqing Gongkai Shuomingshu CN 1504451, 2004 Chem. Abstr. 2005,143, 117780. 

Tabln 15 Rf Values of Homologous Alkylsalicylic Acids and Their Derivatives on Silica Gel G ... 

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