Butyl-3-methylbutyrate

Synonyms CAS 109-19-3 isovaleric acid, butyl ester n-eUTYL ISOPENTANOATE BUTYL-3-METHYLBUTYRATE n-Butyl Lactate... 

Monobasic solutes that have no carbinyl hydrogens may also show nonequivalence. 3-Methyl-2-butanone, 4-methyl-2-pentanone, 2-methylpropanal, methyl 2-methylbutyrate, 2,2,6,6-tetramethyl-piperidine, methyldiisopropylcarbinol, and methylethyl-n-butyl-carbinol in TFAE-saturated benzene all show nonequivalence of sufficient magnitude (0.01-0,03 ppm) to allow nonequivalence sense determination at 220 MHz. An especially striking example is that provided by pyrazolines 26. With only a severalfold excess of (S)-TFAE, 3(5),5(S)-enriched samples of these compounds show nonequivalence in their methyl resonances (downfield sense for the singlets and upfield sense for the triplets) sufficient for enantiomeric purity determination at 90 MHz (52). 

Eight naturally occurring, structurally related avermectins are produced by Streptomyces avermitilis [7], The avermectin polyketide structure is derived from seven acetate and five propionate residues, together with a single 2-methylbutyric acid or isobutyric acid residue which forms the sec-butyl or isopropyl group attached to the C25 of the spiroketal moiety [8,9] (Fig. 1). The avermectin agly-cone is further modified by glycosylation at C13, with the attachment of two O-methylated oleandrose residues and O-methylation at C5. Thus, S. avermitilis... 

This paper deals with the synthesis of propionic acid by the reaction of carbon monoxide, ethylene, and water and with the synthesis of iso-butyric acid and 2-methylbutyric acid, respectively, by the reaction of carbon monoxide with n-propyl alcohol and ra-butyl alcohol. Using equimolar amounts of carbon monoxide and ethylene in the presence of a nickel-kieselguhr (30 70) catalyst, a yield of 40.5% of propionic acid was obtained after two hours at 180° and 3500-psig. pressure. With a nickel iodide-silica gel (Ni Si02 = 50 50) catalyst for the reactions of carbon monoxide and alcohols, conversions up to 82.4% in the case of n-propyl alcohol and 92.8% in the case of n-butyl alcohol were obtained. The effect of the different operating variables on the reactions and the peculiarities of the catalysts have been studied and are discussed. 

This paper deals with the synthesis of propionic acid by the reaction of carbon monoxide, ethylene, and water and the synthesis of isobutyric acid and 2-methylbutyric acid by the reaction of carbon monoxide with n-propyl alcohol and n-butyl alcohol, respectively, in presence of nickel catalysts at high pressures. 

The products of the reactions of carbon monoxide with w-propyl alcohol and n-butyl alcohol, respectively, consisted mainly of isobutyric acid (m.p. and mixed m.p. of p-toluidide 104-105°) and 2-methylbutyric acid (m.p. and mixed m.p. of anilide 108-109°, m.p. of p-toluidide, 92-93°) and small... 

To 10 mL benzene solution containing 0.48 g a-methylbutyric acid (4.7 mmol) was added 2.0 g lead tetraacetate (4.5 mmol). The mixture was stirred at room temperature until homogeneous. Then 0.196 g LiCl (4.5 mmol) was added, and the mixture was immediately flushed with nitrogen to remove oxygen. The surface of the salt at room temperature rapidly achieved a yellow coloration with LiCl. The mixture was placed in a constant-temperature oil bath (81 0.3°C), and the rate of gas evolution was followed volumetrically. The induction period was very short and gas evolution followed apace. The completion of the reaction resulted in a clear colorless solution and a colorless amorphous solid, and the solution was decanted and extracted with dilute aqueous perchloric acid, followed by a Na2C03 wash. The organic layer was dried over Na2S04. About 89% iec-butyl chloride was yielded from this reaction. 

The reaction of pyrrole with ethylmagnesium bromide gives the magnesium salt of pyrrole. This, in turn, reacts with (-)-2-bromobutane to give a mixture of 2-and 3-(2-butyl)pyrrole. Oxidation of the mixture gives (+)-2-methylbutyric acid. Describe how you could determine the stereochemical course (inversion or retention) of the coupling reaction. 

Butyl 2-methylbutanoate. See N-Butyl-2-methylbutyrate 2-Methylbutyl butyrate Butyl 3-methylbutanoate. See n-Butyl isovalerate... 

Butyl 3-methyl butyrate. See n-Butyl isovalerate N-Butyl-2-methylbutyrate CAS 15706-73-7 EINECS/ELINCS 256-973-9 FEMA 3393... 

CAS 51115-64-1 EINECS/ELINCS 256-973-9 Synonyms Butyl 2-methylbutanoate n-Butyl 2-methylbutyrate 2-Methylbutyl butanoate... 

Synonyms 2-Methylbutyl 2-methylbutanoate 2-Methyl butyl 2-methyl butyrate DL-2-Methylbutyric acid 2-methylbutyl ester... 

Isoamyl caprate Isoamyl crotonate Isoamyl heptanoate Isoamyl lactate Isoamyl valerate Isobutyl methylbutyrate Isopropyl 2-methylbutyrate Isopropyl valerate D-Limonene dimercaptan L-Lysine p-Menthadiene Methyl acetoacetate Methyl acetylaminobenzoate 4-Methylbenzyl acetate Methyl 2-butyl butyrate M ethyl -2-butyl-2-methyl butyrate M ethyl caprate Methyl crotonate 3-Methyl-2-cyclopenten-2-ol-1-one Methyl palmitate Methylparaben Methyl pivalate Methyl undecanoate Phenethyl caprylate Phenethyl crotonate... 

Butyl lactate Butyl laurate Butyl levulinate N-Butyl-2-methylbutyrate Butylparaben Butyl phenylacetate n-Butyl propionate Butyl salicylate Butyl stearate Butyl sulfide Butyl 10-undecenoate Butyl valerate n-Butyraldehyde n-Butyric acid Cadinene Camphene Caproic acid Caprylic alcohol Carvacrol Carvacryl ethyl ether Carveol 4-Carvomenthenol Carvone d-Carvone cis-Carvone oxide... 

Apricot (Prunus armeniaca) kernel oil Balsam copaiba (Copaifera officinalis) Benzaldehyde Benzoic acid Benzophenone Benzyl benzoate Benzyl crotonate Benzyl-2-methylbutyrate Benzylsalicylate Butyl alcohol... 

Lemon (Citrus medica limonum) oil Lime (Citrus aurantifolia) extract Maltyl acetate Maltyl butyrate Maltyl isobutyrate Marjoram (Thymus mastichina) oil o-Methylanisole -o-M ethyl benzyl acetate 2-Methylbutyl acetate Methyl 2-butyl butyrate Methyl-2-butyl-2-methylbutyrate Methyl p-t-butylphenylacetate DL-2-Methylbutyric acid Methyl caprate Methyl caproate Methyl caprylate 2-(4-Methyl-3-cyclohexenyl)-2-propanol 4-(1-Methylethyl) cyclohexadiene-... 

Methyl-2-butyl-2-methylbutyrate 219-514-3 Acetomer TGIC Araldite PT 810 PT 810... 

Cyclohexylpropanol Diisobutyl ketone Isononyl aldehyde 2-Methyloctanal Nonanal 2-Nonanone cls-6-Nonen-1-ol trans-2-Nonen-1-ol Trimethylcyclohexanol C9H18O2 Amyl butyrate Amyl isobutyrate n-Butyl isovalerate N-Butyl-2-methylbutyrate Butyl valerate Ethyl heptanoate Heptyl acetate... 

Methylbutyl isovalerate Methyl-2-butyl-2-methylbutyrate Methyl pelargonate Neodecanoic acid... 

Important components of hard cheeses (Gouda type) include some carboxylic acid esters (ethyl butanoate, ethyl hexanoate), as well as carboxylic acids (acetic, butyric, isobutyric, valeric, isovaleric, 2-methylbutyric and caproic acids). Cheeses manufactured using bacteria of the genus Propionibacterium (such as Emmental and Gruyere) contain propionic acid and other lower fatty acids, methyl thioacetate, some oxocarboxylic acids, various alcohols, esters (such as ethyl butanoate), lactones (such as 8-decalactone), amines and other basic compounds (also skatole in addition to aliphatic amines), alkylpyrazines (e.g. 2-sec-butyl-3-methoxypyrazine), 4-hydroxy-2,5-dimethyl-2H-furan-3-one (furaneol), 2-ethyl-4-hydroxy-5-methyl-2H-furan-3-one (homofuraneol) and a range of other compounds. 

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