Isobutyl 3-methyl-3- butanoate

C9H1802 isobutyl 3-methyl butanoate 589-59-3 218.27 19.077 2 18257 C9H20O 6-methyl-3-octanol 40225-75-0 221.51 18.524 2... 

Butanoic acid, 3-methyl-, 2-methylpropyl ester. See Isobutyl isovalerate Butanoic acid, 2-methyl-, 2-phenylethyl ester. See Phenethyl 2-methylbutyrate Butanoic acid, 2-methyl-, phenylmethyl ester. See Benzyl-2-methylbutyrate Butanoic acid, 3-methyl-, 3-phenyl-2-propenyl ester. See Cinnamyl isovalerate Butanoic acid, 3-methyl-, 1,7,7-trimethylbicyclo [2.2.1] hept-2-yl ester, ex-. See Isobomyl isovalerate... 

Esters constituted the largest family and included acetates (ethyl, propyl, isobutyl, butyl, isoamyl, and phenethyl), ethyl esters of fatty acids (propanoate, isobutanoate, butanoate, hexanoate, octanoate, 3-hydroxybutanoate, 3-hydroxyhexanoate and furcate), ethyl esters of organic acids (pyruvate, lactate, ethyl myristate, diethyl malate and, mono- and diethyl succinate) and various other esters, such as methyl butanoate, isobutyl lactate and phenylethyl octanoate. The acids quantified included isobutanoic, butanoic, hexanoic, octanoic, decanoic, lauiic and 3-methylbutanoic. The lactones included y-butyrolactone, pantolactone, y-decalactone and E- and Z-oak lactone and the terpenes included neral d-terpineol, P-dtronellol and Z-nerolidol. The aldehyde family comprised acetaldehyde, benzaldehyde, furfural, 5-methylfurfural and octanal, and the phenol family included eugenol, 4-ethylphenol and 4-ethylguaiacol. Finally, 1,1-diethoxyethane, acetoin, sotolon, 2, 3-butanedione, p-cymene and methionol were also determined. 

Further, the results obtained enabled the correlation of the composition of the volatile fraction of Parmigiano-Reggiano cheese with sensory attributes [42], This subsequent investigation evidences the significance of the flavor in deflning the quality of a food product and, in addition, the contribution of the different volatile compound classes or of the individual substances to the sensory attributes. For example, esters, particularly methyl butanoate, ethyl hexanoate, and isobutyl acetate, are found to be positively related to the fragrant and fruity notes of aged cheese. Short-chain methyl-branched alcohols, secondary products of proteolysis, contribute to a positive maturation component of the aroma, in opposition to the sharp stimuli of free fatty acids (Fig. 6). 

The bicyclic product 59 proved not to be derived from diazo ketone 58. It may arise from the reaction of diazenyl ketene intermediate 53 with diazomethane via the postulated 2-[2-methyl-2-(phenyldiazenyl)propyl] cyclopropanone intermediate 60 and its subsequent isomerization to the bicyclic product 59 (Scheme 14). The formation of the diazenyl ketene intermediate 53 has been made plausible by carrying out the reaction in the presence of an excess of isobutyl alcohol to afford isobutyl 3-methyl-3-[(E)-phenyldiazenyl]butanoate (61) in a competing addition. 

You are aware that methyl isobutyl ketone is used to extract salicylic acids from wastewaters (see Applications section). Salicylic acid is an aromatic carboxylic acid however, butanoic acid is an aliphatic acid. So the question becomes if a ketone (an H-acceptor) would still be a good choice for the extraction of an aliphatic acid. 

Table 5 indicates that apolar and H-donor type solvents would be poor extraction solvents for butanoic acid. Both the H-acceptor and bi-polar solvents have similar values. Since methyl isobutyl ketone is an H-acceptor solvent and has a proven application extracting another organic acid it seams reasonable to initially explore its use as the solvent for the extraction of butanoic acid from wastewater. It is interesting to note that the model gives a reasonable estimate of the distribution compared to the literature value, also noted in Table 5. 

Synonyms Isobutyl n-butyrate 2-Methyl propanyl butyrate 2-Methylpropyl butanoate... 

Synonyms Butanoic acid, 3-methyl-, 2-methylpropyl ester Isobutyl isopentanoate Isobutyl 3-methylbutanoate Isovaleric acid, isobutyl ester 2-Methyl propyl isovalerate 2-Methylpropyl 3-methylbutanoate 2-Methylpropyl 3-methyl butyrate Empirical C9H18O2... 

Reaction of ethyl crotonate and nitroethane in the presence of the basic 1,8-diaza-bicyclo[5.4.0]undec-7-ene (DBU) led to nitro-ester 3.49 in 74% yield.31 Catalytic hydrogenation of the nitro group and acid hydrolysis produced 3-methyl-4-amino-butanoic acid, 3.50. Choosing different conjugated esters as starting materials led to formation of 3-ethyl- (59% overall yield) 3-propyl- (51% overall yield) 3-isopropyl-(62% overall yield) 3-butyl- (56% overall yield) 3-sec-butyl- (60% overall yield) 3-isobutyl- (58% overall yield) and, 3-r-butyl-4-aminobutanoic acid (31% overall yield).31 The yields observed in this study clearly show that conjugate addition of nitro enolates is a synthetically useful process. 

Cyclohexanol Hexan-2-one Hexan-3-one Isobutyl vinyl ether 4-Methylpentan-2-one Butyl ethanoate Ethyl butanoate Hexanoic acid Methyl pentanoate 2-Methylpropyl ethanoate Propyl propanoate... 

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