Methyl dodecanoate

The film thickness is calculated from the elution temperature of methyl dodecanoate (E j). However, quantitation of film thickness requires a calibration of elution temperature... 

Methyl dodecanoate V-Methylethanediamine 1-Methylethyl acetate 1-Methylethyl thiolacetate V-Methylformamide Methyl formate 7.45... 

The transesterification of sucrose has been performed with a fatty acid ester of a volatile alcohol in the presence of an alkaline catalyst in a dipolar, aprotic solvent.142 The reaction of sucrose (293 mmoles) with methyl dodecanoate (293 mmoles) in A/,N-dimethylformamide in the presence of sodium methoxide in a pressure bomb for 8 h at 130° gave, after solvent extraction and crystallization, sucrose mono(dodecanoate) (m.p. 72-80° [a]D+52°) in 50% yield.142 Commercialization of these sucrose esters has so far been limited, in part because of the use of expensive solvents, and, in part, because solvent remaining in the product makes it unsuitable for use as a food emulsifier. In view of this situation, methods have been developed in which the use of toxic and expensive solvents has been avoided. 

The condensation of biguanide and methyl dodecanoate at room temperature, for example, affords 83% 5nelds of (LXXXIII R = R =H, R CiiHga) in the presence of sodium ethoxide (1 mole), but only 54% yields in its absence after 18 hours refluxing. The use of ethyl... 

Amination of methyl dodecanoate or dodecanoic acid in the presence of supported Cu-Cr catalysts. 

Amination and N methylation of methyl dodecanoate or dodecanoic acid, hydrogenation and N methylation of dodecylnitrile, N methylation of dodecylamine in presence of copper-chromium catalysts. 

Table 1 shows that methyl dodecanoate is easily converted into amine in the presence of CuCr deposited on alumina or on titania. Nevertheless one can observe that the methylation reaction is rather difficult and favoured by alumina. Moreover, a significant increase of N-dimethyl dodecylamine is obtained when the reaction is carried out with a large excess of hydrogen. Due to the mechanism of the reaction this is unexpected indeed it is generally considered that the methylation of primary amine with methanol requires i) the dehydrogenation of alcohol into a carbonyl compound and ii) a further reaction of this compound with primary amine or secondary amine via imine or enamine intermediates. 

A similar result also presented in Table 2 is obtained when the acid is replaced by methyl dodecanoate. 

The hydrogenation of fatty acids or fatty esters is of industrial importance for the production of fatty alcohols. Usually, the hydrogenation is performed in slurry-phase or fixed-bed reactors over copper-chromium oxide catalyst at elevated temperature and pressure.37 Rieke et al. investigated the hydrogenation of methyl dodecanoate over copper-chromium oxide at 280°C and 13.8 MPa H2, in order to study the side reactions that occur during hydrogenation.37 On the basis of the potential reaction routes described by Rieke et al., the pathways leading to C12 alcohol and various byproducts are summarized in Scheme 10.2, with exclusion of the formation and reactions of acetals. It has been found that both catalytic activity and selectivity correlated well with the crystallinity of the copper-chromium ox-... 

C12H9N dibenzopyrrole 86-74-8 1.207E-H10 95.880 26505 C13H2602 methyl dodecanoate 111-82-0 1.994E+10 144.840... 

Cl1H2202 nonyl acetate 143-13-5 gas 1.841 2 26505 C13H2602 methyl dodecanoate 111-82-0 in dioxane 1.700 1... 

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