2- Methoxy-l-propanol

Treatment of the 9-fiuoro-l,4-dien-3-ol (15) with 3.5 g-atoms of lithium and l-methoxy-2-propanol in ammonia reductively cleaves the allylic 3-hydroxyl group to give t7 corresponding 3-desoxy compound, but the fluorine... 

This synthetic process is applicable to the preparation of other ketene acetal derivatives of /3-alkoxy alcohols. Examples include the ketene acetal derivatives of tetrahydrofurfuryl alcohol and l-methoxy-2-propanol.3 There are a number of advantages in its use, including a simple, time-saving procedure, readily available and inexpensive reagents, and good yields of ketene acetal obtained by a one-step method. 

Wilding, W.V., Adams, K.L., Carmichael, A.E., Hull, J.B., Jarman, T.C., and Marshall, T.L. Vapor-liquid equilibrium measurements for three binary mixtures allyl alcohol/acetonitrile, 2-butoxyethanol/acetic acid, and l-methoxy-2-propanol/2,3-epoxy-1-propanol, J. Chem. Eng. Data, 47(4) 740-747, 2002a. 

Synonyms Propylene glycol methyl ether PGME l-methoxy-2-propanol Dowanol PM Glycol Ether Propasol Solvent M Poly-solv MPM Solvent... 

A related ligand, MPL (3-methoxypropanol), was combined with Al(f-Bu)3 and Al(Me)3 [28]. The resulting Bll compound was similar to those formed by MEL, with a dative interaction in the methyl compound but not the f-butyl one. However, the dative bond is much longer (2.39 A vs. 2.27 A) for the propyl compound. Another related ligand is MlP(l-methoxy-2-propanol), which was combined with Ga(Me)3 [33]. This complex is nearly identical to that formed by MEL with Ga(Me)3. 

It has been discovered that the performances of platinum and palladium catalysts may be improved by promotion with heavy metal salts. However, there is little information available about the role and chemical state of the promoter 8,9). We have recently found that a geometric blocking of active sites on a palladium-on-activated carbon catalyst, by lead or bismuth, suppresses the by-product formation in the oxidation of l-methoxy-2-propanol to methoxy-acetone 10). 

Paint remover Acetone, l-methoxy-2-propanol, 8 2-(2-methoxyethoxy)-ethanol, l-methyl-2-pyrrolidone, C2-C6-benzenes... 

Alcohols 1-butanol, 1-pentanol, 1-hexanol, 2-ethyl-l-hexanol, 1-heptanol, 1-octanol, 1- decanol, l-methoxy-2-propanol, butoxyethanol, ethoxyethanol, 2- (2-butoxyethoxy) ethanol, benzyl alcohol, 1-dodecanol, 1-tetradecanol, 1-pentadecanol, 1-hexadecanol, 1-octadecanol... 

Special interest has been devoted to such systems as diethylzinc methanol (7 8) [26 28] and diethylzinc l-methoxy-2-propanol (2 3) [29], since well-defined catalysts were isolated in the form of single crystals in these systems, namely [Zn(OMe)2] [EtZnOMe]6 and [Zn(OCH(Me)CH2OMe)2]2[EtZnOCH... 

Mandal S and Pangarkar VG. Pervaporative dehydration of l-methoxy-2-propanol with acrylonitrile based copolymer membranes prepared through emulsion polymerization A solubility parameter approach and study of structural impact. J. Memb. Sci. 2002 209(l) 53-66. 

The tars are sampled discontlnuously by using impingers with an organic solvent, At the beginning of the sampling train, a liquid-quench system is used. After several experiments with different organic solvents, l-Methoxy-2-Propanol was found to be an excellent solvent for sampling both primary and converted tars. 

For the water miscible solvents, l-methoxy-2-propanol has been selected as the most promising candidate. In a later stage, only minor modifications will arise in the Guideline when a non-polar solvent will be used. 

The Group of contractors has proposed a number of candidate solvents methanol, isobulyl methyl ketone and l-methoxy-2-propanol. In relatively short R D projects these candidates will be evaluated using a number of selection criteria that were proposed by the group of contractors. These selection criteria are ... 

Many side reactions can occur during the alkylation of an intermediate containing many nucleophilicsites. Bjoersvichetal. (254) studied the influence of various cations on the N/0 regioselectivity in the N-alkylation of acetamidotriiodoisophthalamide derivatives with 3-chloro-l-methoxy-2 propanol and found that the ion gives the best selectivity and... 

The dilute HP-alcohol solution (HP concentration less than 10%) is introduced in a fixed-bed epoxidation reactor. ATi silicalite (TS-1) catalyst is used also in this case, to produce PO from propene and HP. The reaction is carried out at 40 °C and 20 atm pressure. Process PO yield is estimated to be around 95 mol.% by-products are 1,2-propandiol and the ethers formed by the methanolysis of the oxirane ring (l-methoxy-2-propanol and 2-methoxy-l-propanol), which may further react with PO to yield dipropeneglycol monomethylethers. PO may also form propanol hydroperoxides (l-hydroperoxy-2-propanol and 2-hydroperoxy-l-propanol). Other side-reactions such as the decomposition of HP normally occur to a very low extent. 

PO synthesis is carried out in a methanol solvent, propene and 40% HP adjusted with ammonia to pH 4.5 pressure is 25 atm [20a]. The feed stream contains 21.5 wt% propene, 57 wt% methanol and 9.4 wt% HP. In some patents, a different feed composition is reported, containing 43 wt% propene, 43 wt% methanol and 8.4 wt% HP (from the feeding of a 60% solution of HP in water, adjusted to pH 4.5 with 1100 ppm ammonia) [20c]. The effect of temperature is shown in Table 6.3, for anupflow feed. By-products are l-methoxy-2-propanol, 2-methoxy-l-propanol (propene glycol monomethyl ethers) and propene glycol (1,2-propandiol). How-... 

Chemical deactivation by adsorbed impurities or reaction products was identified as a primary cause of catalyst deactivation [42,43,45-48,50]. Deactivation of platinum catalysts in l-methoxy-2-propanol oxidation was attributed to polymeric species formed by aldol-dimerization and detected by chromatographic... 

Nielsen G.D., Hansen L.F., Nexr B.A. and Poulsen O.M. (1998) Indoor air guideline levels for 2-(2-ethoxyethoxy)ethanol, 2-(2-butoxyethoxy)ethanol and l-methoxy-2-propanol. Indoor Air, Supplement no. 5/98, 37-54. 

Furniture polish (liquid) l-Methoxy-2-propanol, n-butyl acetate, 2-propanol, aliphatic hydrocarbons, branched alkanes, cycloalkanes, l-butanol-3-methyl acetate 8... 

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