L- dodecane

These are oxidised by both Fe(III) and Cu(II) octanoates (denoted Oct) in nonpolar solvents at moderate temperatures . 80-90 % yields of the corresponding disulphide are obtained with Fe(III) and this oxidant was selected for kinetic study, the pattern of products with Cu(II) being more complex. The radical nature of the reaction was confirmed by trapping of the thiyi radicals with added olefins. Simple second-order kinetics were observed, for example, with l-dodecane thiol oxidation by Fe(Oct)3 in xylene at 55 °C (fcj = 0.24 l.mole . sec ). Reaction proceeds much more rapidly in more polar solvents such as dimethylformamide. The course of the oxidation is almost certainly... 

Figure 19 Effect of PEG (MW 22,600) on the phase diagram of the water-NaCl 20 g/L-dodecane-pentanol-SDS system, (a) With 5 g/L PEG. (b) With no PEG. In the section considered, brine/dodecane = 1 salinity = 20 g/L NaCl.

Figure 32 Association number n at 10°C, of alcohol molecules in the oil phase of the microemulsions with different water contents. The association number was calculated from the long dielectric relaxation time of microemulsions, (a) (System l)dodecane/bu-tanol/Brij 97/water microemulsions (b) (system 2) dodecane/pen-tanol/Ci2(EO)g/water microemulsions. (From Ref. 141. With permission from Elsevier Science.)...

Sodium l-dodecane ulfonate [2386-53-0] M 272.4, m >300°. Recrystallise it twice from EtOH and dry it in an oven at 105° for 2 hours. It picks up moisture to form the 3.5H2O. Its hydrate crystallises in several phases. [Tartar Wright Chem Soc 61 543 1939, Reed Tartar J Am Chem Sod 57 571 1935, Beilstein 4 III 27, 4IV 64]... 

Figure 7. Retention diagrams of >L-dodecane on graft copolymers with PSMA branches (M =4460). SMA contents in.wt % (1) 100 (PSMA homopolymer) (2) 69 (3) 50 (4) 30 (5)...

Py-GC-MS has been used to characterise elastomers including natural rubber, butyl rubber, polychloroprene and acrylonitrile-butadiene copolymer [91]. Other copolymers that have been investigated include 1-octene-l-decene-l-dodecane terpolymer [92], acrylic-acid methacrylic acid [39],styrene-butadiene[93-95],styrene-isoprene [54], ethylene-vinyl acetate [96], polyisopropenyl cyclohexane - -methyl styrene [57], vinyl pyrrolidine- methacryloxysilicone [97], ethylene-carbon monoxide [98], acrylic copolymers [99], 1-vinyl-2-pyrrolidine - l-vinyl-3-methylimidoazolium chloride [100], acrylonitrile-butadiene-styrene [101], acetone-furfural [102] and styrene-acrylonitrile [103]. 

Tonck A, Georges J M and Loubet J L 1988 Measurements of intermoiecuiar forces and the rheology of dodecane between alumina surfaces J. Coiioid interface Sc/. 126 150-5... 

Diall l Peroxides. Some commercially available diaLkyl peroxides and their corresponding 10-h half-life temperatures in dodecane are Hsted in Table 6 (44). DiaLkyl peroxides initially cleave at the oxygen—oxygen bond to generate alkoxy radical pairs ... 

Dodecane-l,10-dioic acid (decane-1,10-dicarboxylic acid) [693-23-2] M 230.3, m 129°, b 245°/10mm, pK ,t -4.8. Crystd from water, 75% or 95% EtOH (sol 10%), or glacial acetic acid. 

A. Tonck, J. M. Georges, J. L. Loubet. Measurements of intermolecular forces and the rheology of dodecane between alumina surfaces. J Colloid Interface Sci 72(5 150-163, 1988. 

Bohlmann et al. (118-121) observed that an infrared absorption band between 2700-2800 cm is characteristic of a piperidine derivative possessing at least two axial carbon-hydrogen bonds in antiperiplanar position to the free-electron pair on the nitrogen atom. The possibility of forming an enamine by dehydrogenation can be determined by this test. Compounds which do not fulfill this condition cannot usually be dehydrogenated (50, 122,123). Thus, for example, yohimbine can be dehydrogenated by mercuric acetate,whereas reserpine or pseudoyohimbine do not react (124). The quinolizidine (125) enamines (Scheme 4), l-azabicyclo(4,3,0)-nonane, l-azabicyclo(5,3,0)decane, l-azabicyclo(5,4,0)undecane, and l-azabicyclo(5,5,0)dodecane have been prepared in this manner (112,126). 

PcSiCI2 dodecan-l-ol. NaBH , benzene, reflux, 2.5 h PcSi(OC12H35)2 0.7 332... 

An example for a partially known ternary phase diagram is the sodium octane 1 -sulfonate/ 1-decanol/water system [61]. Figure 34 shows the isotropic areas L, and L2 for the water-rich surfactant phase with solubilized alcohol and for the solvent-rich surfactant phase with solubilized water, respectively. Furthermore, the lamellar neat phase D and the anisotropic hexagonal middle phase E are indicated (for systematics, cf. Ref. 62). For the quaternary sodium octane 1-sulfonate (A)/l-butanol (B)/n-tetradecane (0)/water (W) system, the tricritical point which characterizes the transition of three coexisting phases into one liquid phase is at 40.1°C A, 0.042 (mass parts) B, 0.958 (A + B = 56 wt %) O, 0.54 W, 0.46 [63]. For both the binary phase equilibrium dodecane... 

Wahrend l-ChIor-6-oxo-3,3-dimethyI-cyclohexen bei -2,05 Vin wasserfreiem Aceto-nitril zum 6-Oxo-3,3-dimethyl-cyclohexen (66% d.Th.) reduziert wird, erhalt man in was-serhaltigem Acetonitril, ebenfalls bei -2,05 V, 2,12-Dichlor-l-hydroxy-3-oxo-6,6,9,9-tetramethyl-tricyclo[6.3.1.02 7]dodecan (18% d. Th.)2 ... 

Bicyclic [6.4.0]dodecane systems have been prepared [17] by catalyzed and photochemical intermolecular cycloaddition of the cyclooct-2-en-l-ones 10 and 1,3-butadiene (1) and by catalyzed intramolecular cycloaddition of trienone 11 (Scheme 3.4). 

Parkhurst, R. M., Wolde-Yohannes, L. and Makhubu, L. P. 1990. Phytolacca dodecan-... 

Marches JR, SA Owen, GF White, WA House, NJ Russell (1994) SDS-degrading bacteria attach to riverine sediment in response to the surfactant or its primary degradation product dodecan-l-ol. Microbiology (UK) 140 2999-3006. 

The cracking of diphenylmethane (DPM) was carried out in a continuous-flow tubular reactor. The liquid feed contained 29.5 wt.% of DPM (Fluka, >99%), 70% of n-dodecane (Aldrich, >99% solvent) and 0.5% of benzothiophene (Aldrich, 95% source of H2S, to keep the catalyst sulfided during the reaction). The temperature was 673 K and the total pressure 50 bar. The liquid feed flow rate was 16.5 ml.h and the H2 flow rate 24 l.h (STP). The catalytic bed consisted of 1.0 g of catalyst diluted with enough carborundum (Prolabo, 0.34 mm) to reach a final volume of 4 cm. The effluent of the reactor was condensed at high pressure. Liquid samples were taken at regular intervals and analyzed by gas chromatography, using an Intersmat IGC 120 FL, equipped with a flame ionization detector and a capillary column (Alltech CP-Sil-SCB). 

Figure 2.7 Activity test of an uncoated fused silica capillary after deactivation with poly(phenyliaethylhydrosiloxane), (A), and before deactivation, (B). Precolunn 15 x 0.20 m I.D. coated with SE-54. Test columns 10 a x 0.20 I.D. The column tandem was programmed from 40 to I80 c at a C/min after a 1 min isothermal hold with a hydrogen carrier gas velocity of 50 cm/s. The test mixture contained 10 n-decane, Cg-NH = l-aminooctane, PY 3,5-dimethylpyrimidine, C 2 n-dodecane, - 1-amlnodecane, DMA ...

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