Hexyl aldehyde

Hexylic Aldehyde.—Hexylic or caproic aldehyde, CjHjjCHO, has been identified in oil of Eucalyptus globulus. It is a liquid boiling at 128 at 740 mm., and having a specific gravity 0-837. 

Many aldehyde reductases transform both aldehydes and ketones. For example, phenylacetaldehyde reductase (PAR) from a styrene-assimilating Corynebacterium strain, ST-10, reduces hexyl aldehyde and phenylacetaldehyde [22aj. Other aldehyde reductases such as one from Sporobolomyces salmonicolor also reduce aldehydes as well as ketones [22b]. 

The substitution of trialkylphosphine for carbon monoxide also makes the metal-hydrogen bond more hydridic in character and results in increased reduction of the initially formed aldehyde to alcohol. Slaugh and Mullineaux (52) compared Co2(CO)g and [Co2(CO)8 + 2PBu3], each at reaction conditions of 150°C, 500 psi, H2/CO I.0, for the hydroformylation of 1-pentene. The products consisted of hexyl aldehydes and hexyl alcohols in the ratios of 95 5 and 30 70, respectively. In a negative aspect of the reaction, they observed 23% hydrogenation of alkene to alkane at a reaction temperature of 195°C with the phosphine-modified catalyst. Tucci (54) reported less alkane formation (4-5%) under more favorable reaction conditions (I60°C, H2/CO 1.2, 1 hour reaction time). 

Hexaldehyde n-Hexaldehyde 1-Hexanal n-Hexanal Hexoic aldehyde n-Hexyl aldehyde... 

Hexyl alcohol, acetate. See Hexyl acetate n-Hexyl aldehyde. See Hexanal 4-Hexyl-1,3-benzenediol. See 4-Hexyl resorcinol Hexyl benzoate... 

Caproic Aldehyde Caproeddehydei n-hexyl aldehyde, hexanal)... 

Small quantities of esters (in the above example n-hexyl n-caproate CH3(CHj)3COO(CH2)jCH3) are simultaneously formed. This is an excellent method for the preparation of aldehydes. 

Benzaldehyde s most important use is in organic synthesis, where it is the raw material for a large number of products. In this regard, a considerable amount of benzaldehyde is utilized to produce various aldehydes, such as cinnamic, methyl cinnamic, amyl cinnamic, and hexyl cinnamic. 

Dearman, R.J. et al., Temporal stability of local lymph node assay responses to hexyl cinnamic aldehyde, J. Appl. Toxicol., 18, 281, 1998. 

Ethyl hexanol, sometimes called 2-ethyl hexyl alcohol, 2-ethyl hex, or more simply 2-EH, is one of the oldest high molecular weight aliphatic alcohols. What does it have in common with NBA Both are made from propylene via the Oxo process, and both have the same aldehyde intermediate— normal butyraldehyde. 

Further DCL experiments were carried out focussing solely on aldehyde 3 and the four amines, enabling a binding series to be established. An important control experiment was carried out, whereby the DCL was constituted in the presence of hexyl 4-sulfamoylbenzoate, a known CA... 

The synthesis of oxaziridine-fused quinazolinones 277 follows a different route. Quinazolinones 274 (R = Et, nPr, n-hexyl) can readily be prepared by reacting 2-oxo-l-cyclohexanecarboxamide with aldehydes in the presence of ammonia solution. In the reaction of 274 and monoperoxyphthalic acid, the hydroxyoxaziridines 277 were formed via the presumed intermediates 275 and 276. No spectroscopic evidence was given for 277, nor was its relative configuration investigated [76JPR(318)895]. 

XAD-2 macroreticular resin columns. This situation implied that the XAD-2 column was not effective in retaining completely all the solutes present in the water samples. [NOTE The XAD-2 resin column contained about 25% more packing, and the rate of percolation was about the same as that normally used for processing 200 L of tap water (21).] In addition, a variety of volatiles that appeared immediately following the solvent peak were also present. Subsequent analysis of these concentrates by GC-MS indicated the presence of 6-chloro-2,4-diamino-1,3,5-triazine (tentative), 2,5-diphenylisoxazole (tentative), tributoxyethyl phosphate (confirmed), bis(2-ethylhexyl) phthalate (confirmed), and dimethylbenzoic acid (confirmed) from site 1. The concentrate from site 2, however, showed the presence of 2,4,5-trichlorophenol (confirmed), BHC (confirmed), 2,5-diphenylisoxazole (tentative), bis(2-ethyl-hexyl) phthalate (confirmed), trimethylbenzene (confirmed), ethylbenz-aldehyde (confirmed), ethylacetophenone (confirmed), hexanoic acid (confirmed), and 4-cyano-3,7,ll-tridecatriene (tentative). 

The demands for new alcohols were to a considerable extent satisfied by the commercialization of the oxo synthesis in the United States (1). The synthesis involves reaction of an olefin with carbon monoxide and hydrogen to produce an aldehyde, which is reduced subsequently to a primary alcohol. From branched chain feeds such as pentene, heptene, nonene, and tetrapropylene-hexyl, isooctyl, isodecyl, and tridecyl alcohols have been made available to the plasticizer industry in large volume. These alcohols are mixtures of branched chain isomers owing to the branched nature of the olefin feed. (Oxo hexyl alcohol contains about H 1-hexanol). 

It was the late Professor Callender (12), who as an outcome of experiments upon the slow combustion of hexane which resulted in the formation of valeraldenyde, acetaldehyde, and fonnaldehyde without any detectable initial hexyl alcohol, CeHi3OH, first suggested that the initial oxidation of a hydrocarbon in air more probably involves the formation of an alkyl peroxide by the direct incorporation of the oxygen molecule in the hydrocarbon molecule after the collision which subsequently decomposes into aldehydes and water thus... 

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