Didecyl ketone

The above correlations relate only to spectra obtained in non-polar solvents, and departures from them are common when samples are examined in the solid or liquid state. Hartwell, Richards and Thompson [12] carried out a general study of the influence of physical state on a series of carbonyl compounds and found wide variations in the liquid state. Similarly, in the vapour phase the carbonyl frequencies were found to be appreciably different from those obtained in solution. Acetone, for example, absorbed at 1742 cm in the vapour phase, whereas in solution the frequency lay between 1728 cm and 1718 cm , depending on the solvent. Similarly, didecyl ketone absorbed at 1740 cm in the vapour state, and between 1724 cm and 1717 cm in solution. Dubois et al. [97] have recently given the vapour phase frequencies for a number of ketones, where the same effect is shown. It is probable that some form of dipolar association is occurring in the condensed phase [100,101], resulting in a low-frequency shift of the order of 20 cm". As far as possible, therefore, frequency measurements on ketones should be carried out in solution. 

Reduction of nitromethyl alkyl ketones over Raney nickel has also been effected to give 2,5-didecyl- and 2,5-dipentylpyrazine (235). 

DIdecyl Phthalate Methyl Isobutyl Ketone Polypropiilenc Gtycol 1200 ... 

The incorporation of substructures into ladder polymers provides molecular properties with well-defined configuration and conformation. The difficulties, however, in synthesizing ladder-type polymers have been reported [50,51] For the synthesis of soluble ladder-type PPP, first, PPP precursor 51 with functional ketone groups was prepared by Pd-catalyzed coupling reaction of dihexyl-substituted aromatic boronic acid 29 with didecyl-substituted aryl bromide 50 in 60-80% yields. The values determined by GPC were 6100-9200 [52]. 

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