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1,4-dimethylcyclohexane

The free enthalpy of activation, aG, of the ring inversion at 253 K is calculated from the logarithmic form of the Eyring equation  [Pg.190]

The assignment of resonances in Table 14.2 results from summation of substituent effects as listed in Table 14.1. The data refer to conformer I for conformer II the C atoms pairs C-l/C-2, C-3/C-6, C-4/C-5 and C-7/C-8 change places. [Pg.190]

Nonvolatile matter, gremi/IQO ml Sulfur content weight girctnt Cogger corrosion DoyortMt Flaiih p bint, appfoximite, F 0.0005 [Pg.23]

PROPERTIES RESEARCH GRADE PURE GRADE TECHNICAL GRADE [Pg.24]


Wedge and dash drawings fail to show conformation and it s important to remember that the rings of cis and trans 1 2 dimethylcyclohexane exist m a chair conformation This... [Pg.125]

CIS 1 2 Dimethylcyclohexane trans 1 2 Dimethylcyclohexane Axial-equatorial Diequatorial (1248 3) (1246 8) (1 5) trans... [Pg.126]

A reaction that introduces a second chirality center into a starting material that already has one need not produce equal quantities of two possible diastereomers Con sider catalytic hydrogenation of 2 methyl(methylene)cyclohexane As you might expect both CIS and trans 1 2 dimethylcyclohexane are formed... [Pg.309]

Could the fact that hydrogenation of 2 methyl(methylene)cyclo hexane gives more as 1 2 dimethylcyclohexane than trans be explained on the basis of the relative stabilities of the two stereoisomeric products ... [Pg.309]

No The major product as 1 2 dimethylcyclohexane is less stable than the minor product trans 1 2 dimethylcyclohexane... [Pg.1212]

Like the 1,4-dimethyl derivatives, trani-1,2-dimethylcyclohexane has a lower heat of combustion (see Table 3.2) and is more stable than d5-l,2-dimethylcyclohexane. The cis ster eoisomer has two chair conformations of equal energy, each containing one axial and one equatorial methyl group. [Pg.127]

The heats of combustion of the more and less stable stereoisomers of the 1,2-, 1,3-, and 1,4-dimethylcyclohexanes are given here. The values are higher for the 1,2-dimethylcyclohexanes than for the 1,3- and 1,4-isomers. Suggest an explanation. [Pg.139]

Active Figure 4.15 Conformations of c/s-1,2-dimethylcyclohexane. The two chair conformations are equal in energy because each has one axial methyl group and one equatorial methyl group. Sign in at www.thomsonedu.com to see a simulation based on this figure and to take a short quiz. [Pg.125]

Figure 4.16 Conformations of rrans-1,2-dimethylcyclohexane. The conformation with both methyl groups equatorial is favored by 11.4 kJ/mol (2.7 kcal/mol) over the conformation with both methyl groups axial. Figure 4.16 Conformations of rrans-1,2-dimethylcyclohexane. The conformation with both methyl groups equatorial is favored by 11.4 kJ/mol (2.7 kcal/mol) over the conformation with both methyl groups axial.
Dimethylallyl diphosphate, biosynthesis of, 1077 geranio biosynthesis and. 382 cis-1,2-Dimethylcyclohexane. [Pg.1294]

Since compounds with alkyl equatorial substituents are generally more stable, trans-1,2 compounds, which can adopt the ee conformation, are thermodynamically more stable than their cis-1,2 isomers, which must exist in the ae conformation. For the 1,2-dimethylcyclohexanes, the difference in stability is about 2kcal moP (8 kJ mol" ). Similarly, trans-1,4 and cis-1,3 compounds are more stable than their stereoisomers. [Pg.174]

Relative rate studies of cyclic cis- and trans-l 2-diols give no clear pattern of results. C -cyclohexane-l 2-diol is oxidised by V(V) faster than the trans isomer, but the reverse is found for the isomers of 1 2-dimethylcyclohexane-1 2-diol. [Pg.390]


See other pages where 1,4-dimethylcyclohexane is mentioned: [Pg.127]    [Pg.127]    [Pg.127]    [Pg.139]    [Pg.287]    [Pg.288]    [Pg.404]    [Pg.473]    [Pg.473]    [Pg.501]    [Pg.501]    [Pg.519]    [Pg.519]    [Pg.551]    [Pg.551]    [Pg.592]    [Pg.678]    [Pg.373]    [Pg.190]    [Pg.191]    [Pg.126]    [Pg.309]    [Pg.106]    [Pg.125]    [Pg.126]    [Pg.16]    [Pg.76]    [Pg.220]    [Pg.390]    [Pg.952]    [Pg.221]    [Pg.42]    [Pg.213]   
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See also in sourсe #XX -- [ Pg.27 ]

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See also in sourсe #XX -- [ Pg.127 ]

See also in sourсe #XX -- [ Pg.203 ]




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1.1- dimethylcyclohexane-type

1.1- dimethylcyclohexane-type intermediate

1.2- Dimethylcyclohexane, stereoisomers

1.2- Dimethylcyclohexanes

1.2- Dimethylcyclohexanes

1.3- Dimethylcyclohexane, conformational analysis

1.4- Dimethylcyclohexane, conformational

1.4- fran -Dimethylcyclohexane

2-Diazo-5,5-dimethylcyclohexane-l,3-dion

5.5- Dimethylcyclohexane-1,3-dione

5.5- Dimethylcyclohexane-1,3-dione dimedone)

5.5- Dimethylcyclohexane-l,3-dione

C/5-l,2-dimethylcyclohexane

C/s-l,3-dimethylcyclohexane

Cis and trans 1 2 Dimethylcyclohexane

Cis-1,2-Dimethylcyclohexane

Cis-l,2-dimethylcyclohexane

Conformational isomers 1,4-dimethylcyclohexane

Conformational isomers dimethylcyclohexanes

Cycloalkanes dimethylcyclohexanes

Cyclohexane derivatives 1.2- dimethylcyclohexanes

Dimethylcyclohexane isomers

Dimethylcyclohexanes oxidation

Dimethylcyclohexanes, conformational

Dimethylcyclohexanes, from dimethylcyclohexenes

L,?-Dimethylcyclohexane

Mixed 1,2-Dimethylcyclohexane

Mixed 1,4-Dimethylcyclohexanes

Trans-1,2-DIMETHYLCYCLOHEXANE.44(Vol

Trans-1,2-Dimethylcyclohexane conformational analysis

Trans-1,2-Dimethylcyclohexane, structure

Trans-1,2-dimethylcyclohexane

Trans-l,2-dimethylcyclohexane

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