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Alkyl lactates

This method of preparation is suitable for producing primary alkyl lactates but is unsatisfactory for /3-methallyl lactate because the strong mineral acid catalyzes the rearrangement of methallyl alcohol to isobutyraldehyde. Methyl lactate can be made conveniently (80-85% yield) by heating 1 mole of lactic acid condensation polymer with 2.5-5 moles of methanol and a small quantity of sulfuric acid at 100 for 1-4 hours in a heavy-walled bottle, such as is used for catalytic hydrogenation with a platinum catalyst. [Pg.6]

Pyruvic acid is the simplest homologue of the a-keto acid, whose established procedures for synthesis are the dehydrative decarboxylation of tartaric acid and the hydrolysis of acetyl cyanide. On the other hand, vapor-phase contact oxidation of alkyl lactates to corresponding alkyl pyruvates using V2C - and MoOa-baseds mixed oxide catalysts has also been known [1-4]. Recently we found that pyruvic acid is obtained directly from a vapor-phase oxidative-dehydrogenation of lactic acid over iron phosphate catalysts with a P/Fe atomic ratio of 1.2 at a temperature around 230°C [5]. [Pg.201]

In another process, a dialkyl a-methyldiglycolate (formed from an alkyl lactate and an alkyl monochloroacetate) is reacted with dialkyl oxalate in the presence of a sodium alkoxide and dimethylformamide. The reaction product is cyclized, alkylated, hydrolyzed, and decarboxylated [187]. [Pg.147]

Rehberg, C. E. and M. B. Dixon, Mixed Esters of Lactic and Carbonic Acids n-Alkyl Carbonates of Methyl and Butyl Lactates, and Butyl Carbonates of n-Alkyl Lactates. J. Org. Chem., 1950 15, 565-571. [Pg.74]

Similar straight-line correlations between aqueous solubility and Nc or M have been found for certain homologous series of mono- and multifunctional compounds such as 1-alkanols, 2-alkanols [6], 2-alkanones [9], n-alkyl acetates [10], n-alkyl /3-ethoxypropionates [11], n-alkyl a-acetoxypropionates, and n-alkyl lactates [12]. In contrast, Sobotka and Kahn [13] have found significant deviations from simple linear correlations with Nc for the series of ethyl esters of monocarbonic acids. They report a zig zag curve caused by the relatively higher solubility of the members with odd values for Nq- The odd-even effect is discussed in detail by Burrows [14], with further examples provided. [Pg.122]

Alkylene bromide, 20, 24 Alkylene thioureas, 26, 35 Alkylidenecyanoacetic esters, 25, 48 Alkyl lactate, 26, 6 Alkyl phenyl selenides, 24, 91 S-Alkylthiuronium halides, 22, 60 d/-ALLOTHREONINE, 20, 104 Alloxan, 23, 3... [Pg.97]

An additional approach to environmentally responsible inks is to source the raw materials from renewable resources. In this approach solvents are based mainly on alkyl lactates and binders such as cellulose or nitrocellulose. ... [Pg.158]

Anionic, cationic, amphoteric, zwitterionic surfactants thickening agents benefit agents (silicones, fats and oils, vitamins, plant extracts, sunscreens, alkyl lactate, essential oils, etc.) small amount of soap... [Pg.417]

Among other surface active esters, polyglycol esters of fatty acids, alkanoyl glycerol acetates and lactates, alkyl lactates, esters of fatty acids and pentaerythritol, glucose, methylglucose, mannose, sucrose, and, especially, sorbitol are often exploited. The latter, sorbitan acylates, are particularly known as Spans , Arlacels , and Arlamol ISML - all of ICI production. These mild and low-toxic emulsifiers are widely applied in food, pharmaceutical, personal care and other consumer and industrial products. [Pg.15]

Neutral Wilkinson type catalysts with chiral ligands are quite effective for the hydrogenation of C=0 bonds in prochiral 2-oxocarbo Q lic acids or their esters and are applied to the as5mimetric S5mthesis of 2-hydroxyesters with rather high ee s of up to 80-95%. The reduction of alpha- iQ o esters, such as alkyl-pymvates into alkyl-lactates (Scheme 7.18.) on chiral complexes is one of the most important methods of the synthesis of chiral synthones for practical use. [Pg.283]

Fast and selective sugar conversion to alkyl lactate and lactic acid with biftmctional carbon-silica catalysts. J Am Chem Soc 134(24) 10089-10101... [Pg.36]

Hayashi Y, Sasaki Y (2005) Tin-catalyzed conversion of trioses to alkyl lactates in alcohol solution. Chem Commun 2716-2718... [Pg.39]

Yields in mol% of LA when solvent is H2O and of alkyl lactate when solvent is alcohol Prepared via classic hydrothermal method using HF... [Pg.100]

Realization of high alkyl lactate yields from trioses in various alcohols is thus possible. For hexoses this implies that steps 2 and 3 of the reaction cascade in Fig. 5 require extra attention, before the known triose chemistry can ensue. The... [Pg.102]

Major product Alkyl lactates Ca-lactate salt... [Pg.105]

Simonov MN, Zaddn PA, Simakova IL (2012) Highly selective catalytic propylene glycol synthesis from alkyl lactate over copper on silica performance and mechanism. Appl Catal B 119-120 340-347... [Pg.120]

Pescarmona PP, Janssen KPE, Delaet C, Stroobants C, Houthoofd K, Philippaerts A, De Jonghe C, Paul JS, Jacobs PA, Sels BF (2010) Zeolite-catalysed conversion of C3 sugars to alkyl lactates. Green Chem 12 1083-1089... [Pg.122]

Wang J, Masui Y, Onaka M (2011) CtmvCTsitm of tiiose sugars with alcohols to alkyl lactates catalyzed by Bronsted acid tin ion-exchanged montmOTilltmite. Appl Catal B 107 135-139... [Pg.123]

Dapsens PY, Kusema BT, Mondelli C, Perez-Ramirez J (2013) Gallium-modified zeolites for the selective conversion of bio-based dihydroxyacetone into C1-C4 alkyl lactates. J Mol Catal A Chem. http //dx.doi.Org/10.1016/j.molcata.2013.09.032... [Pg.123]

C16-18 alcohols, ethoxylated, phosphates (2 EO). See Ceteareth-2 phosphate C16-18 alcohols, ethoxylated, phosphates (4 EO). See Ceteareth-4 phosphate C16-18 alcohols, ethoxylated, phosphates (5 EO). See Ceteareth-5 phosphate C16-18 alcohols, ethoxylated, phosphates (10 EO). See Ceteareth-10 phosphate Cl 2-15 alcohols lactate. See Cl2-15 alkyl lactate... [Pg.721]

Cl2-15 alkyl ethylhexanoate Cl2-15 alkyl 2-ethylhexanoate. See Cl 2-15 alkyl octanoate Cl2-13 alkyl 2-hydroxypropanoate. See Cl 2-13 alkyl lactate... [Pg.725]

CH3(CH2)sCHOH(CH2)ioCOOCHCH2(CH2)4CH3(C H2)ioCOOR, R rep. Cl8-38 alkyl moiety Uses Emollient in cosmetics Cl2-13 alkyl lactate... [Pg.725]


See other pages where Alkyl lactates is mentioned: [Pg.1714]    [Pg.41]    [Pg.731]    [Pg.74]    [Pg.136]    [Pg.585]    [Pg.155]    [Pg.731]    [Pg.747]    [Pg.109]    [Pg.51]    [Pg.48]    [Pg.52]    [Pg.90]    [Pg.98]    [Pg.116]    [Pg.116]    [Pg.116]    [Pg.120]    [Pg.190]    [Pg.725]   
See also in sourсe #XX -- [ Pg.6 , Pg.26 ]

See also in sourсe #XX -- [ Pg.6 , Pg.26 ]

See also in sourсe #XX -- [ Pg.6 , Pg.26 ]

See also in sourсe #XX -- [ Pg.6 , Pg.26 ]




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