Dimethyl 2- pentanedioate

Some of the peak assignments in Tabie 6.7.20 are tentative because the mass spectra of many compounds in poiy(methyi methacrylate) pyrolysate are not available in the commercial mass spectral libraries. For example, 2-methylene-4,4-dimethyl-pentanedioic acid dimethyl ester (MW = 200) and 2,4,4 frimethyl-2-pentenedioic acid dimethyl ester (MW = 200) were assigned based on the mass spectra shovm in Figures 6.7.28 a and 6.7.28 b. 

AI3-06026 DBE 5 Dimethyl giutarate Dimethyl pentanedioate EINECS 214-277-2 Glutaric acid, dimethyl ester HSDB 5789 NSC 58578 Pentanedioic acid, dimethyl ester. Liquid mp = -42.5° bp = 214°, bp2i = 109° d = 1.0876 soluble in CHCI3. very soluble in EtOH, Et20. 

Synonyms Dimethyl pentanedioate Pentanedioic acid, dimethyl ester... 

CAS 1119-40-0 EINECS/ELINCS 214-277-2 Synonyms Dimethyl pentanedioate Pentanedioic acid, dimethyl ester Empiricai C7H12O4 Formuia CH30C0(CH2)3C00CH3 Properties Colorless liq. sol. in oxygenated soivs. m.w. 160.17 dens. 1.087 (20/4 C) m.p. -42 C b.p. 230 C flash pt. 97 C ref. index 1.424 (20 C) Uses Solvent for coatings, cleaners, inks, textile lubricants, urethane prod. plasticizer for flexible thermoset polyester polymer intermediate for polyester polyols for urethanes, wet-str. paper resins, polyester resins antistat specialty chemical... 

Dimethyl pentanedioate. See Dimethyl glutarate 2,4-Dimethylpentan-3-one 2,4-Dimethyl-3-pentanone. See Diisopropyl ketone Di (4-methyl-2-pentyl) maleate. See Dimethyl amyl maleate... 

Dimethyl pentanedioic acid anhydride Dihydro-4,4-dimethyl-2/f pyran-2,6(3/ -dione CzHioOa 4160-82-1 142.152 125.8 181"" ... 

Di methyl-1,3-pentadiene A/,A/-Dimethylpentanamide 2,2-Dimethyl pentane 2,3-Dimethyl pentane 2,4-Dimethyl pentane 3,3-Dimethyl pentane 3,3-Dimethyl pentanedioic acid anhydride 3,3-Dimethylpentanedioicacid... 

C11H20 04 3,3-dimethyl-pentanedioic acid diethyl ester ... 

The application of 3-aminopropyl phosphine (3) [41,46] as a building block for incorporation into -COOH functionalized frameworks provides an excellent example of the utility of preformed primary phosphine frameworks (Scheme 8) [46]. The reactions involved Michael addition of ferf-butyl acrylate to malonic acid dimethyl ester to produce the intermediate adduct, 2-methoxycarbonyl-pentanedioc acid 5-ferf-butyl ester 1-methyl ester, which upon treatment with trifluro-acetic acid (TFA) produced the corresponding diester acid,2-methoxy-carbonyl-pentanedioic acid 1-methyl ester, in near quantitative yield. It is remarkable to note that the reaction of NH2(CH2)3PH2 (3) with the diester acid is highly selective as the -COOH group remained unattacked whereas the reaction occurred smoothly and selectively at the -COOMe groups to pro-... 

Figure 11.1 Py/methylation GC/MS chromatograms of lead white pigmented linseed oil paint after 610 °C Curie point pyrolysis assisted with on line methylation using 2.5% methanolic TMAH (the sample and TMAH solution was applied onto a rotating Curie point wire pyrolysis time 6 s, interface 180°C). 1, heptenoic acid, methyl ester 2, heptanoic acid, methyl ester 3, butenedioic acid, dimethyl ester 4, butanedioic acid, dimethyl ester 5, octenoic acid, methyl ester 6, octanoic acid, methyl ester 7, pentenedioic acid, dimethyl ester 8, pentanedioic acid, dimethyl ester 9, nonanoic acid, methyl ester 10, hexanedioic acid, dimethyl ester 11, decanoic acid, methyl ester 12, heptanedioic acid, dimethyl ester 13, octanedioic acid, dimethyl ester 14, 1,2 benzenedicarboxylic acid, dimethyl ester 15, a methyl octanedioic acid, dimethyl ester 16, nonanedioic acid, dimethyl ester 17, a methoxy octanedioic acid, dimethyl ester 18, a methyl nonanedioic acid, dimethyl ester 19, a,a dimethyl nonenedioic acid, dimethyl ester 20a, a methyl nonenedioic acid, dimethyl ester 20b, a,a dimethyl nonanedioic acid, dimethyl ester 21, decanedioic acid, dimethyl ester 22, a methoxy nonanedioic acid, dimethyl ester 23, a methyl decan edioic acid, dimethyl ester 24, undecanedioic acid, dimethyl ester 25, a methoxy decan edioic acid, dimethyl ester 26, pentadecanoic acid, methyl ester 27, dodecanedioic acid, dimethyl ester 28, hexadecanoic acid, methyl ester 29, heptadecanoic acid, methyl ester 30, octadecanoic acid, methyl ester 31,8 methoxy 9 octadecenoic acid, methyl ester 32, 11 methoxy 9 octadecenoic acid, methyl ester 33, 9 methoxy 10 octadecenoic acid and 10 methoxy 8 octadecenoic acid 34, 9 oxo octadecanoic acid, 10 oxo octadecanoic acid 35, 9 epoxy octadecanoic acid 36, eicosanoic acid, methyl ester 37, 9,10 dimethoxy octadecanoic acid, methyl ester 38, docosanoic acid, methyl ester. Reprinted from J. Anal. Appl. Pyrol., 61, 1 2, van den Berg and Boon, 19, Copyright 2001, with permission from Elsevier...

Dimethyl 2-[ [l-(Benzyloxycarbonylammo)ethyl](methoxy)phosphoryl)methyl]pentanedioate [62,... 

Dimethyl 2-(dimethylaminomethyl)pentanedioate. To a stirred solution of dimethylamine (28%) in anhydrous methanol (100 ml) held at 0 °C (ice bath), under nitrogen, is added, via a syringe, dimethyl 2-methylenepentanedioate (10.3 g, 60 mmol) in one portion. The solution is stirred for 4 hours, during which period the temperature must never exceed 5 °C. Removal of excess amine and methanol under reduced pressure gives a pale yellow oil, which is distilled under reduced pressure to give dimethyl 2-(dimethylaminomethyl)-pentanedioate (12.8 g, 99%) as an oil b.p. 81-83 °C/0.4 mmHg i.r. (thin film) 1735 cm-1 p.m.r (CDC13, TMS) d 1.8-3.0 (m,7H), 2.22 (s,6H), 3.67 (s,3H) and 3.69 (s, 3H). 

Dimethylaminomethyl)-l,2-bis(trimethylsilyloxy)-cyclopentene. In a 500-ml three-necked flask, equipped with a football stirrer, a reflux condenser and a 100-ml pressure-equalising dropping funnel (maintained under oxygen-free nitrogen), are added toluene (200 ml) (2) and sodium (4.0 g, 174 mmol). The toluene is brought to reflux on an oil bath (bath temperature 135 °C) and the mixture stirred until a fine suspension of sodium is produced. Dimethyl 2-(dimethylaminomethyl)pentanedioate (10.6 g, 48 mmol) and chlorotrimethyl-silane (20.0 g, 184 mmol, CAUTION) (distilled from calcium hydride, under nitrogen, immediately prior to use) in dry toluene (80 ml) are added dropwise... 

HAT)ROXY-2-PENTANEDIOIC ACID, DIMETHYL ESTER, DIMETHYL PHOSPHATE see SOYOOO... 

Pentanedioic acid, 3-methyl-2-(phenyl-methyl)-, dimethyl ester, cobalt complex, 26 197... 

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