For each pair of substituted cyclohexanes, identify the more stable compounds.
Chair Forms of Substituted Cyclohexanes For each structure or name below, draw both chair forms of the compound and indicate which of the two is more stable. Consult the table of A values here. 16. 1-tert-butyl-1-methylcyclohexane Ph 19. 17. trans-1,3-dibromocyclohexane 18. Cl 20. OH
Question 28 Rank the below substituted cyclohexanes by increasing relative stability. (least stable first) F I<ll<III OO ll<l<III Ill<ll</ Il<llll
13. Below are the planar hexagon representations for two substituted cyclohexanes. Using the chair conformations provided, draw the chair conformation for these compounds a and b and indicate the most stable conformation (if applicable) for each of these two compounds. 3 points) CH C(CH3)3 CH3 CH3 CH3 н H H н А B Compound A "flip" Compound B "flip"
with explanation 1) Draw a chair conformation of cyclohexane. Then, draw and level properly all axial and equatorial positions on chair form of cyclohexane. 2) Draw chair, half-chair and boat conformations of ethyl cyclohexane and draw an energy diagram to explain their relative stability: 3) Draw two possible chair conformations for each of the mono-substituted cyclohexanes and determine their relative stability with proper explanation. OH 4) Draw two possible chair conformations for each of the di-substituted cyclohexanes and determine their...
A more substituted radical is less stable. True False
Of each of the following pairs of compounds, identify the one which would be the more stable, and give a justification??? Q5. Of each of the following pairs of compounds, identify the one which would be the more stable, and give a justification. Justification A) cis or trans-CH3CH2CH=CHCH3 che o CH2 or CHCH; cichs ºn) or (ZCH,COCH=CHČOCH or (Z)-CH3COCH=CHCOCH3
1. For each pair of compounds identify which compound can be more readily deprotonated and explain your choice. (a) 2,4-dimethyl-3,5-heptanedione or 4,4-dimethyl-3,5-heptanedione (b) acetophenone or benzaldehyde 2. Predict the major product for the following transformation and propose a mechanism for its formation. 1. H307, Br2 2. Base C6H100
Consider the disubstituted cyclohexane structures in pair A. MICH₃ CHS CHE pair A The disubstituted cyclohexanes in pair A are: O O diastereomers. identical. enantiomers. Consider the disubstituted cyclohexane structures in pair B. pair B The disubstituted cyclohexanes in pair B are: O enantiomers. diastereomers. identical.
Analyze each pair of compounds structures represent. Your cho cach pair of compounds below. Identify which class of isomers each pair of s represent. Your choices are: (i) constitutional, (ii) conformational, (iii) omers, (iv) diastereomer or (v) identical (non-isomers). Only one label for each pair should be used. For each case show work (drawings, (R)/(S), rotation of bonds, chair- "ps, etc) which led you to each answer for the pairs below. Any differences of answers between you and your peers...
Recall that Zaitsev’s rule says that more substituted alkenes are more stable. Therefore, propene is less stable than trans-but-2-ene, which is less stable than 2-methylbut-2- ene, which is less stable than 2,3-dimethylbut-2-ene. In Chapter 7, we showed that we could demonstrate this stability ordering by using heats of hydrogenation. a) Does the same apply for other groups, besides alkyl groups? For example, compare the stability of propene, trans-but-2-ene and trans-1-chloroprop-1-ene to compare the effects of adding a chlorine instead of...