Propanediol 2-methyl

Methyl-2-propyl-l, 3-propanediol dicarbamate 1, 3-Propanediol, 2-methyl-2-propyl-, dicarbamate 2-Methyl-2-propyl-trimethylene dicarbamate B.P., U.S.P, Eur. P, Int. P., Ind. P. 

CAS 27813-02-1 EINECS/ELINCS 248-666-3 Synonyms Hydroxypropyl monomethacrylate Methactylic acid, monoester vrith 1,2-propanediol 1,2-Propanediol, 2-methyl, monometh-actylate 2-Propenoic acid, 2-methyl-, 2-hydroxymethylethyl ester 2-Propenoic acid, 2-methyl-, monoester with 1,2-propanediol Classification Nonaromatic ester Enpirical CjHuO,... 

CAS 77-85-0 EINECS/ELINCS 201-063-9 Synonyms 2,2-Bis (hydroxymethyl) propan-1-ol 1,1,1-Ethanetrimethylol Ethylidynetrimethanol 2-Hydroxymethyl-2-methyl-1,3-propanediol 2-Methyl-2-hydroxymethyl-1,3-propanediol Methyltrimethylolmethane Pentaglycerine TME 1,1,1 -Tris (hydroxymethyl) ethane Empirical C5H12O3 Formula CH3C(CH20H)j... 

CAS 2163-42-0 EINECS/ELINCS 412-350-5 Synonyms 2-Methyl-1,3-propanediol MPD 1,3-Propanediol-2-methyl... 

H-NMR (200.13 MHz with a sweep width of 3600 Hz) and C-NMR (50.33 MHz with a sweep width of 13.5 kHz) spectroscopy were used to study the microstructiu e of fiunarate-based polyesters for use in bioresorbable bone cement composites and the impact of their microstructure on the physical properties as well as hydrolysis of the cements [145]. Poly(propylene fumarate)s (PPF) were synthesized by the transesterification polycondensation of diethyl fumarate (DEE) with different diols ( )-l,2-propanediol (PD), (S)-(+)-l,2-propanediol, 2-methyl-1,3-propanediol, and 2,2-dimethyl-1,3-propanediol in the presence of p-toluenesulfonic acid monohydrate (PTSA) or metal-containing catalysts zinc chloride, aluminum trichloride, ti-... 

The nitro alcohols in Table 1 are manufactured in commercial quantities however, three of the five of them are used only for the production of the corresponding amino alcohols. 2-Methyl-2-nitro-l-propanol (NMP) is available as the crystalline soHd or as a mixture with siHcon dioxide. 2-Hydroxymethyl-2-nitro-1,3-propanediol is available as the soHd ( 9.15/kg), a 50% solution in water ( 2.33/kg), a 25% solution in water ( 1.41/kg), or as... 

Polymers. AH nitro alcohols are sources of formaldehyde for cross-linking in polymers of urea, melamine, phenols, resorcinol, etc (see Amino RESINS AND PLASTICS). Nitrodiols and 2-hydroxymethyl-2-nitro-l,3-propanediol can be used as polyols to form polyester or polyurethane products (see Polyesters Urethane polymers). 2-Methyl-2-nitro-l-propanol is used in tires to promote the adhesion of mbber to tire cord (qv). Nitro alcohols are used as hardening agents in photographic processes, and 2-hydroxymethyl-2-nitro-l,3-propanediol is a cross-linking agent for starch adhesives, polyamides, urea resins, or wool, and in tanning operations (17—25). Wrinkle-resistant fabric with reduced free formaldehyde content is obtained by treatment with... 

Propylene oxide is a colorless, low hoiling (34.2°C) liquid. Table 1 lists general physical properties Table 2 provides equations for temperature variation on some thermodynamic functions. Vapor—liquid equilibrium data for binary mixtures of propylene oxide and other chemicals of commercial importance ate available. References for binary mixtures include 1,2-propanediol (14), water (7,8,15), 1,2-dichloropropane [78-87-5] (16), 2-propanol [67-63-0] (17), 2-methyl-2-pentene [625-27-4] (18), methyl formate [107-31-3] (19), acetaldehyde [75-07-0] (17), methanol [67-56-1] (20), ptopanal [123-38-6] (16), 1-phenylethanol [60-12-8] (21), and / /f-butanol [75-65-0] (22,23). 

In contrast to the hydrolysis of prochiral esters performed in aqueous solutions, the enzymatic acylation of prochiral diols is usually carried out in an inert organic solvent such as hexane, ether, toluene, or ethyl acetate. In order to increase the reaction rate and the degree of conversion, activated esters such as vinyl carboxylates are often used as acylating agents. The vinyl alcohol formed as a result of transesterification tautomerizes to acetaldehyde, making the reaction practically irreversible. The presence of a bulky substituent in the 2-position helps the enzyme to discriminate between enantiotopic faces as a result the enzymatic acylation of prochiral 2-benzoxy-l,3-propanediol (34) proceeds with excellent selectivity (ee > 96%) (49). In the case of the 2-methyl substituted diol (33) the selectivity is only moderate (50). 

Amino-2-methyl-l,3-propanediol [115-69-5] M 105.1, m 111 , b 151-152 /10mm, pK 8.80. Crystd three times from MeOH, dried in a stream of dry N2 at room temp, then in a vacuum oven at 55 . Stored over CaCl2 [Hetzer and Bates J Phys Chem 66 308 1962],... 

Methyl-2-nitro-l,3-propanediol [77-49-6] M 135.1, m 145 . Crystd from n-butanol. 

Elution 0.05 M GTA buffer, pH 7.0 (G, 3,3-dimethylglutaric acid T, trishydroxyaminomethane A, 2-amino-2-methyl-l,3-propanediol) plus indicated salt. 

The first synthesis and use of a chiral oxazoline was reported by Meyers in 1974. The chiral oxazoline 1 was prepared in two steps by condensation of (-i-)-l-phenyl-2-amino-1,3-propanediol (6) with the ethyl imidate of propionitrile followed by 0-methylation of the resulting alcohol 7 with NaH/Mel. Meyers demonstrated chiral oxazoline 1 could be... 

A cooled 10% solution of 1 mol of phosgene in toluene was added with stirring to a cooled solution of 1 mol of 2-methyl-2-propyl-1,3-propanediol and 2 mols of dimethylaniline also dissolved in toluene, at such a rate that the temperature of the mixture was maintained at about 25°C. The mixture was allowed to remain at this temperature for several hours, then... 

Nitroethane and formaldehyde are first reacted to give 2-methyl-2-nitro-1,3-propanediol. This is reacted with 2-ethylhexylamine and formaldehyde to give 5-nitro-1,3-bis(2-ethyl-hexyl)-5-methyl-hexahydropyrimidine. 

The following example illustrates the preparation of 2-methyl-2-sec-butyl-1,3-propanediol ... 

Chemical Name 2-methyl-2-propyl-1,3-propanediol dicarbamate Common Name Procalmadiol procalmidol... 

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