5- Formylsalicylic acid

Using 2,6-diformyl-4-methylphenol dioxime, Tasker, Schroder, and their co-workers conducted a magnetostructural study on complex (374) (pseudo macrocyclic structure Cu-Cu 2.994 A 2J= — 904 cm-1).330 Using 2-hydroxy-5-nitro-benzaldehyde benzoylhydrazone as ligand, complex (375) (Cu-Cu 3.041 A 2J=—372cm 1) was reported.331 Using 3-formylsalicylic acid oxime Okawa and co-workers reported complex (376) (square-planar and SP geometry Cu-Cu 2.961 A).332... 

Schiff base and related complexes of uranium and thorium are widely described in recent literature and covered in a review [463]. Those of U(VI) have a practical use as catalytic organic oxidants [460] or as part of a polystyrene-supported chelating resin [464,465]. Among other Schiff base precursors, salicylaldehyde [466] and triethylenetetramine [464], 3-formylsalicylic acid and o-hydroxybenzylamine [465], or salicylaldehyde and l-amino-2-naphthol-4-sulfonic acid [467] were used. In the example of Schiff base complexes, kinetics of formation of U(VI) complexes and their pK values were studied [468]. 

The Schiff bases H2fsacR derived from 3-formylsalicylic acid and amines form dinuclear complexes with the essential structure (128). The complexes were isolated as hydrates and the electronic spectra indicate that the nickel is six-co-ordinate.574... 

A series of hydroxyquinoid compounds Cu(L — 2H) with polymeric structures, e.g. (153) has been obtained.687 3-Formylsalicylic acid [LH2] forms dinuclear [CuL]2, which is oxygen-bridged, and has a reduced magnetic moment of 0.32 BM.523... 

CHjCHjOH template synthesis 3-formylsalicylic acid, amine, Na2C03, Ni(OAc)2 4HjO in HjO solution presumably H O molecules in axial positions antiferromagnetic behaviour... 

The chemical immobilization of formylsalicylic acid derivatives on the surface of amino group-containing silica gel phases was reported. The resulting phases were examined for the extraction of Fe(III) and showed an exchange capacity of 0.95-0.96 mmol/g. The other tested metal ions showed lower metal capacity than Fe(lll). The selectivity incorporated into these silica gel phases for the extraction of Fe(III) from a mixture containing several other interfering metal ions was studied and evaluated by atomic absorption spectro-photometric analysis. In addition, a method for the recycling of the immobilized silica gel phases after... 

Many biogenetic pathways have been proposed for the conversion of 6-MSA to patulin. In addition to 6-MSA (4) and patulin (1), P. patulum produces a variety of phenolic metabolites, some of which are represented in Fig. 7 6-formylsalicylic acid (5), m-cresol (6), m-hydroxybenzyl alcohol (7), gentisyl alcohol (8), gentisaldehyde (9), gentisic acid (10), and toluquinol (11). 

Early biogenetic theories have involved the intermediacy of 6-formylsalicylic acid (5) (Fig. 7) in patulin formation. Hydroxylation of 5 to yield a hypothetical metabolite, 5-hydroxy-6-formylsalicylic acid, and subsequent... 

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