2-Propanol and acetone

The relative proportions of unsaturated carbohydrate, sensitizer (usually acetone), and solvent may have a decided effect upon a photochemical addition reaction, as at least three competing processes (cycloaddition, radical addition, and energy transfer) are possible. The irradiation of 1 in the presence of 2-propanol and acetone provides an illustration (see Scheme 4). When a small proportion of sensitizer... 

Oxygenated VOCs include methanol, ethanol, 2-propanol and acetone, and in general the comparative ease of destruction is ... 

Figure 4. = Experimentally determined xL2/xL1 of VLLE in glucose + 2-propanol + water + carbon dioxide systems here and y/x of VLE10, = exp. determined xL2/xL1 of VLLE in glucose + acetone + water + carbon dioxide systems, O, = extrapolated y/xL1 and y/xL2 of VLLE in systems with 2-propanol and acetone...

Schulz et al. observed that during the cobalt normal-pressure synthesis, 2-propanol and acetone tracer compounds were interconverted by fast hydrogenation/dehydrogen-ation reactions thus, both acetone and 2-propanol initiated chain growth. With either acetone or 2-propanol, propane was found to be one of the major products. 

Figure X.2. Kinetic curves of the formation of 2-ptopyl hydroperoxide. 2-propanol, and acetone fr

Hanaoka et al. (1999) reported the effect of additive and of rhodium colloid catalyst (Rh4(CO)i2) for selective photocatalytic transfer hydrogenation of 1,5-COD to COE. The solution of rhodium colloid particles was prepared with an irradiation method that consists of stirring a solution with Rh4(CO)n in 2-propanol and acetone for 32 min... 

NADP+ in a reaction with 2-propanol accompanied by formation of acetone as coproduct. Both ketone/alcohol reactions are equilibrium processes and therefore high 3delds of (f )-2-octanol are not available in a monophasic aqueous system, or in an organic-aqueous biphasic system where the partition coefficients of 2-propanol and acetone are approximately the same. It was found, however, that in a biphasic water/[bmim][(CF3S02)2N] system acetone was preferentially dissolved by the IL phase and this pulled the catalytic transfer hydrogenation of NADP+ by 2-propanol in the aqueous phase to near completion. Consequently, almost quantitative yields of (i )-2-octanol were obtained (275). 

A mixture of adenine, 2-propanol, and acetone as sensitizer exposed 19 hrs. to y-rays from a Co-source 8-(2-hydroxy-2-propyl)adenine. Y 81%. F.e. and reactions, also with UV-irradiation, and nucleosides, s. H. Steinmaus, I. Rosenthal, and D. Elad, J. Org. Chem. 36, 3594 (1971). 

The peroxyl radical that has been most extensively studied for its interactions with antioxidants is the trichloromethyl peroxyl radical (CCI3O ), which is produced during the metabolism of CCLt via reaction of the trichloromethyl radical (CCI3) with oxygen [69] and is known to cause hepatoxicity and other types of tissue injury. Pulse radiolysis is normally used to generate this radical and in primarily aqueous solutions it is prepared in air saturated solutions by adding carbon tetrachloride, 2-propanol and acetone and is produced via the following reactions [70]. 

HjSO, but the magnitude of the current density was not affected largely up to a concentration of lOmmol dm . With 2-propanol, the current due to the alcohol oxidation was superimposed on the ORR current, and the potential shifted by approximately 0.5 V at 0.1 mol dm . Both 2-propanol and acetone are MEA components because 2-propanol is added to the catalyst ink, and acetone is produced by oxidation of 2-propanol on the platinum cathode. The effects are, however, not serious because their concentration is less than lOmmol dm . Methanol is used as a fuel in direct methanol fuel cells, and crossover through the polymer electrolyte membrane is known to cause a degradation of the ORR at the cathode, when the concentration of the fuel is as high as 5 mol dm . 

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