Propane results

On March 9,1972, an overturned tractor-semitrailer carrying liquid propane resulted in a propane release. The propane cloud was later ignited. The resulting fire killed two persons five others were injured. 

Alkaline condensation of 4-isopropylbenzaldehyde and propanal results, via the aldol, in the formation of 2-methyl-3-(4-isopropylphenyl)-2-propenal. The unsaturated aldehyde is hydrogenated selectively to the saturated aldehyde in the presence of potassium acetate and a suitable catalyst, such as palladium alumina [150] ... 

The effects of operating variables on the Duosol extraction system are complex and are best determined empirically. As would be expected, an increase in Selecto results in increased refinement and reduced yield. An increase in propane results in improved raffinate color and decreased viscosity index, but its effect on carbon residue is unpredictable. 

In summary, the concept of guest to cavity size ratios (and hydrate structure change) can provide molecular comprehension of a substantial decrease in equilibriumpressure required for a small composition change. The sll stability by small amounts of propane results in the fact that most natural gases form sll, because most reservoirs contain small amounts of propane. 

It was also found that the ratio of the two esters is highly dependent on the propane/ CO ratio. In contrast to the preferential C—C bond cleavage and formation of ethylcarboxonium ion (112) observed at high CO/propane ratios, increasing amounts of propane result in increasing selectivities of the formation of the isopropylcarbox-onium ion 113 (Figure5.16). Under such conditions, formation ofthe isopropyl cation... 

Propane. Heating barium peroxide under propane results in a violent exothermic reaction.16... 

Often, it is desirable to conduct an aldol condensation in which the nucleophile and the electrophile are derived from different compounds. In general, such mixed aldol condensations, involving two different aldehydes, result in the formation of several products and for this reason are not useful. For example, the reaction of ethanal and propanal results in the formation of four products because there are two possible enolate nucleophiles and two carbonyl electrophiles ... 

Additions to the enantiomeric a-methyl-/3-ODPS propanals resulted in relatively high catalyst control compared with additions conducted with BF3 OEt as the promoter (Eqs 19 and 20). In the mismatched case (Eq. 20) the chiral catalyst effectively reverses the intrinsic substrate preference observed in the BFa-promoted addition. The matched pairing (Eq. 19) results in enhanced preference for the product of substrate control syn, syn) when the chiral catalyst is employed. 

Use the name of the parent alkane, such as meth for a single carbon eth for two carbons and prop for three carbons, and the suffix ane for a straight-chain saturated carbon sequence the common names methane, ethane, and propane result. 

As stated before, the enantioselective MBH reaction of cyclopent-2-en-l-one with 3-phenyl-1-propanal resulted in low enantioselectivities (<10%) when using (i )-BINOL and tributylphosphine. However, better results have been achieved using calcium chiral catalyst 379 along with BU3P, with the desired adduct provided in 56% enantiomeric purity (Scheme 2.215). ... 

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