L- acetone

The methanol(l)/acetone(2) system serves as a specific example in conjunction with the Peng/Robinson equation of state. At a base temperature To of 323.15 K (50°C), both XT E data (Van Ness and Abbott, Jnt. DATA Ser, Ser A, Sel. Data Mixtures, 1978, p. 67 [1978]) and excess enthalpy data (Morris, et al., J. Chem. Eng. Data, 20, pp. 403-405 [1975]) are available. From the former. 

Further analysis of the spectral data for the P2"acetyl compounds 28 and 29 (Table 1) also indicates that the positive charge is distributed over both metal centers. The electronic environment of the C-bonded iron of 28 and 29 clearly lies intermediate between that of the starting acetyl complex and of the a-alkoxy-alkylidene compounds. Similarly the acetyl complexes provide more electron density to CpFe(CO)2+ within 28 than does acetone or THF within CpFe(C0)2Li+ [L =acetone, THF]. 

At 25 °C (g/L) acetone (2,500), alcohol (1,000), benzene (2,500), chloroform (2,000), ether (1,000), glacial acetic acid (2,500), oil of turpentine (667). Also soluble in aniline, carbon disulfide, decalin, methylhexalin, nitrobenzene, petroleum ether, tetralin, higher alcohols, in fixed and volatile oils (Windholz et al., 1983). 

Ladefofoged O, Perbellini L Acetone induced changes in the toxicokinetics of 2,5-hexanedione in rabbits. ScandJ Work Fnviron Health 12 627-629, 1987... 

Included in this section are oxidations of benzene and phenyl rings, and in general the oxidation of aromatic and polycyclic aromatic compounds. The main catalyst for this type of reaction is RuO. The earliest example was the use of stoich. RuOy CCI4 for phenanthrene oxidation [239], while the first catalytic reagent was RuO / aq. Na(I04)/acetone for oxidation of pyrene [240]. Another early example was the conversion of diketo compounds to the nor-diketo acids, with concomitant destruction of the two phenyl rings by RuO /aq. NallO l/acetone (Fig. 3.18, 3.2.2.1) [206]. 

BF4Mo04C, Hm, Molybdenum(l +), (acetone)-tricarbonyl(T)5-cyclopenta-dienyl)-... 

BF404WC,]Hm, Tungsten(l +), (acetone)-tricarbonyl(r 5-cyclopentadienyl)-tetrai1uoroborate(l -), 26 105 BF40,ReC5, Rhenium, pentacarbonyl-[tetrafluoroborato(l —)]-, 26 108 BF405ReC7H4, Rhenium(l+), pentacar-bonyl-(-r)2-ethene)-tetrafluoroborate( 1 —), 26 110 BO PtC Fl, Platinum(II), (3-methoxy-3-oxo-KO-propyl-KC )bis(triethyl-phosphine)-... 

A 250-mL aliquot of wastewater containing 72 mg/L of n-propanol (C3H7OH) was spiked with 50 mL of 100 mg/L acetone solution. Determine the COD as mg/L of the resulting solution. 

FIGURE 16. Linear chains showing the different environments at the thallium centers. (a)L = OPPh3,R — C6F5 (b)L — OPPh3,L — acetone or tetrahydrofuran, R — C6C15. 

K2C03 (0.32 kg), Nal (catalytical amount), and 1-bromopropane (0.28 kg) and about 5% of water, were added to the organic phase from the previous step. The mixture was heated to reflux to complete the reaction. The excess of bromopropane was removed by distillation. The reaction mixture was extracted with water (1.70 L). Acetone (1.70 L) was added to the organic phase followed by HCI (aq) to pH about 2. The solution was seeded. The crystal slurry was cooled to 9°C. The crystals were collected by centrifugation and were washed with acetone. The product was used directly in the next step and was not dried. Yield (calculated on the dry basis) 0.47 kg of ropivacaine hydrochloride (about 0.90%). 

Chloro-l-(4-fluorophenyl)indole (6.70 kg) and 4-piperidone-monohydrate, hydrochloride (8.38 kg) were transferred to a 200 L reactor under N2 cover. Acetic acid (67 L) was added and the reaction mixture was heated to 60°C. Concentrated HCI (37%, 33.5 L) was added during 0,5 h and then the mixture was heated to the reflux temperature (85°C) and refluxed for 1 h (final temperature 95°C). After cooling to 30°C, 33.5 L acetone was added followed by further cooling to 25°C. Filtration, wash (acetone 20 L) and drying in vacuum at 60°C gave the 5-chloro-l-(4-fluorophenyl)-3-(l,2,3,6-tetrahydropyridin-4-yl)indole as a white powder, yield 8.94 kg. 

The water phase was extracted with further 15 L dichloromethane. The combined dichloromethane phases were dried with Na2S04 and were evaporated. The product was flushed off with 5 L acetone, 35 L acetone was added and the suspension was heated until reflux. The crystallised product did not dissolve completely. Heating was discontinued and the mixture was left over night with gentle cooling. The crystallised l-[2-[4-[5-chloro-l-(4-flourophenyl)-lH-indol-3-yl]-l-piperidinyl]ethyl]-2- imidazolidinone was isolated on a notch, washed with further 5 L acetone and dried over night under air stream at 60°C. Yield 4.90 kg (83.2%), melting point 154.7°C. 

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