Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Drawing Chair Conformations

Now you need to draw the compound in its chair conformation. Draw a chair with only five sides, and then draw the two double bonds at the ends of the chain. [Pg.207]

The Te(Ses)2 ion contains two Se2] bidentate ligands coordinated to a square planar tellurium centre, (i) What is the oxidation state of Te in Te(Ses)2 (ii) Each TeSe -ring has a chair-conformation. Draw the structure of Te(Ses)2, given that the Te atom lies on an inversion centre. [Pg.508]

DRAW A CHAIR CONFORMATION DRAW A CHAIR CONFORMATION SHOWING ALL SIX AXIAL... [Pg.102]

It IS no accident that sections of our chair cyclohexane drawings resemble saw horse projections of staggered conformations of alkanes The same spatial relationships seen m alkanes carry over to substituents on a six membered ring In the structure... [Pg.119]

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]

The following are representations of two forms of glucose The six membered ring is known to exist in a chair conformation in each form Draw clear representations of the most stable con formation of each Are they two different conformations of the same molecule or are they stereoisomers Which substituents (if any) occupy axial sites ... [Pg.140]

The easiest way to visualize chair cyclohexane is to build a molecular model. (In fact do it now.) Two-dimensional drawings like that in Figure 4.7 are useful, but there s no substitute for holding, twisting, and turning a three-dimensional model in your own hands. The chair conformation of cyclohexane can be drawn in three steps. [Pg.118]

Draw 1,1-dimethylcyclohexane in a chair conformation, indicating which methyl group in your drawing is axial and which is equatorial. [Pg.121]

Draw two different chair conformations of cyclohexanol (hvdroxycvclohexane), showing all hydrogen atoms. Identify each position as axial or equatorial. [Pg.122]

Draw- the most stable chair conformation of the following molecules, and estimate the amount of strain in each ... [Pg.127]

Draw the two chair conformations of cis-l-chloro-2-methylcyclohexane. Which is more stable, and by how much ... [Pg.133]

Galactose, a sugar related to glucose, contains a six-membered ring in which all the substituents except the -OH group indicated below in red are equatorial. Draw galactose In its more stable chair conformation. [Pg.134]

A The diaxial conformation of c/s-l,3-dimethylcyclohexane is approximately 23 kj/mol (5.4 keal/mol) less stable than the diequatorial conformation. Draw the two possible chair conformations, and suggest a reason for the large energy difference. [Pg.134]

A wyo-Inositol, one of the isomers of 1,2,3,4,5,6-hexahydroxycyclohexane, acts as a growth factor in both animals and microorganisms. Draw the most stable chair conformation of myo-inositol. [Pg.135]

Ketones react with alcohols to yield products called acetals. Why does the all-cis isomer of 4- cvf-butyl-l13-cyclohexanediol react readily with acetone and an acid cataty st to form an acetal while other stereoisomers do not react In formulating your answer, draw the more stable chair conformations of all four stereoisomers and the product acetal. Use molecular models for help. [Pg.136]

Problem 11.19 Which isomer would you expect to undergo E2 elimination faster, f/uus-l-bromo-4-fr7t-butyJcyclohexane or ds-l-bromo-4-tert-butylcyclohexane Draw each mole-, cule in its more stable chair conformation, and explain your answer. [Pg.391]

There are eight diastereomers of 1,2,3,4,5,6-hexachlorocyclohexane. Draw each in its more stable chair conformation. One isomer loses HC1 in an E2 reaction nearly 1000 times more slowly than the others. Which isomer reacts so slowly, and why ... [Pg.406]

As a rule, axial alcohols oxidize somewhat faster than equatorial alcohols. Which would you expect to oxidize faster, ch-4-te/t-butylcyclohexanol or t/m/.v-4-teh-buiylcyclohexanol Draw the more stable chair conformation of each molecule. [Pg.647]

Problem 25,13 Draw /3-o-galactopyranose and jS-D-mannopyranose in their more stable chair conformations. Label each ring substituent as either axial or equatorial. Which would you expect to be more stable, galactose or mannose ... [Pg.987]

Draw /3-t-galactopyranose in its more stable chair conformation, and label the substituents as either axial or equatorial. [Pg.987]

Problem 27.8 Draw the following molecules in chair conformations, and tell whether the rin substituents are axial or equatorial ... [Pg.1081]

Problem 27.9 Lithocholic acid is an A-B cis steroid found in human bile. Draw lithocliolic acid showing chair conformations as in Figure 27.11, and tell whether the hydroxyl group at C3 is axial or equatorial. [Pg.1082]

Draw the most stable chair conformation of dihydrocarvone. [Pg.1096]

Draw the most stable chair conformation of menthol, and label each substituent as axial or equatorial. [Pg.1096]

There are two very important drawing styles that show conformations and give us the power to predict what conformations are available to different types of molecules Newman projections and chair conformations ... [Pg.104]

EXERCISE 6.15 Draw a chair conformation of the compound below ... [Pg.118]

PROBLEMS Draw a chair conformation for each of the componnds below. [Pg.120]

Let s now go back and review, because it is important that you understand the following points. When we are given a hexagon-style drawing, the drawing shows us which positions are up and which positions are down. No matter which chair we draw, up will always be up, and down wiU always be down. There are two chair conformations for this compound, and the molecule is flipping back and forth between these two conformations. With each flip, axial positions become equatorial positions and vice versa. Let s see an example. [Pg.123]

Notice that there are two groups on this ring. Cl is down (because it is on a dash), and Br is up (because it is on a wedge). There are two chair conformations that we can draw for this compound ... [Pg.123]


See other pages where Drawing Chair Conformations is mentioned: [Pg.2024]    [Pg.2024]    [Pg.129]    [Pg.219]    [Pg.129]    [Pg.121]    [Pg.125]    [Pg.127]    [Pg.986]    [Pg.987]    [Pg.987]    [Pg.1014]    [Pg.113]    [Pg.113]    [Pg.115]    [Pg.122]   
See also in sourсe #XX -- [ Pg.113 , Pg.116 ]

See also in sourсe #XX -- [ Pg.167 , Pg.168 , Pg.169 , Pg.172 , Pg.173 ]




SEARCH



Chair

Chair conformation

Chair conformation, conformational

Chair conformer

Conformation chair conformations

© 2024 chempedia.info