1. Which position is more stable for the methyl group in methylcyclohexane: an
equatorial position or an axial position? Explain your answer.
2. Draw the Fisher projections for the pair of enantiomers of lactic acid,
CH3–CH(OH)–COOH.
3. For 2,3-dibromobutane:
a. How many stereoisomers are possible for the compound?
Br Br
| |
CH3–CH–CH–CH3
b. Draw Fisher projections for each stereoisomer, label enantiomers. Label any meso
4. Determine the relationship between the following pairs of structures: identical,
enantiomers, diastereomers.
1. Which position is more stable for the methyl group in methylcyclohexane: an equatorial position...
Q11. The correct structure of trans-1-bromo-3-methyl cyclopentane is ...Br (A) (B) -Br Br (C) (D) *Br Q12. The correct order of increasing stability for the following conformations is CH, H Н. Н H H H CH2CH3 H Н CH,CH CH CH3CH2 CH H2C CH, H CH, I II III (A) III < III (C) II <I<III (B) I<III <II (D) I< II < III Q13. Identify the relationship between the following two Newman projections. CH, H НАС. H Н;С. Н...
3. Assign R or S configuration to the following molecules: Br F Н. F H- Br CH, Br CHECH, H CH2CH3 CH2CH3 CH, CH, -CHE OH H CH=CH2 H3CH2 HY CH(CH3)2 CH 4. Label each pair of stereoisomers below as A,B,C,D a Enantiomers b. Diastereomers Identical d Meso Compounds
How would you draw the most stable conformation of
trans-1-ethyl-3-methylcyclohexane?
Axial ethyl group on C-1, Axial methyl group on C-3
Axial ethyl group on C-1, Equatorial methyl group on C-3
Equatorial ethyl group on C-1, Axial methyl group on C-3
Equatorial ethyl group on C-1, Equatorial methyl group on C-3
Choices b and c are both correct
Choices a and d are both correct
How would you draw the most stable conformation of
trans-1-chloro-2-fluorocyclohexane?
Axial chlorine on C-1, Axial fluorine...
1. Draw the different conformations of cyclohexane and indicate which conformer is more stable and explain the reason why it is more stable. 2. Draw the saddle conformation of cyclohexane and indicate the axial and equatorial positions of the hydrogen atoms. 3. Identify the chiral carbon with an asterisk in the following molecule. Say how many stereoisomers you can have. CH3CH(OH)CH(Br)CH3
How would you draw the most stable conformation of cis-1-ethyl-2-methylcyclohexane? Axial ethyl group on C-1, Axial methyl group on C-2 Axial ethyl group on C-1, Equatorial methyl group on C-2 Equatorial ethyl group on C-1, Axial methyl group on C-2 Equatorial ethyl group on C-1, Equatorial methyl group on C-2 Choices b and care both correct O Choices a and d are both correct Submit Answer Tries 0/1 How would you draw the most stable conformation of trans-1,4-dimethylcyclohexane? Axial methyl...
help needed in andwering this full question
Question Three a. For each chiral centre in the following molecules, assign an Ror S configuration. For full marks, you must clearly indicate the order of priority of the groups attached to each chiral centre, OH OH CH3 CH(OCH3)2 CHO b. Draw all stereoisomers of 2,3-dibromobutane (use 3D dash/wedge structures or Fischer projections to depict stereochemistry). Clearly identify enantiomers, diastereomers and meso compounds. Be sure to identify the stereocentres as Rors
I have completed some answers! I just really really need help
with the rest! I am so lost! please help me, if you can!
What information do you need? Can you see the pictures that I
posted?
#2-6 are using the FIGURE from question #2
#7-8 go together and uses #7 FIGURE
#9-12 uses #9"s FIGURE but #11 and #12 compares the two FIGURES
from #7	
#13 and 14 are together
# 15 and # 16 are their own problems...
Hello just double checking my ochem study guide, please answer
ALL the questions you see below, if not let
someone else do them please! High rating only given to
ALL questions complete
Provide the relationship between the two structures shown. In the space provided, indicate S, if the two structures represent the same conformation of the same compound, CF, if the two structures represent different conformations of the same compound, CI, if the two structures are constitutional isomers, E, if...
How would you draw the most stable conformation of trans-1-tert-butyl-2-methylcyclohexane? O Axial tert-butyl group on C-1, Axial methyl group on C-2 Equatorial tert-butyl group on C-1, Axial methyl group on C-2 O Axial tert-butyl group on C-1, Equatorial methyl group on C-2 O Equatorial tert-butyl group on C-1, Equatorial methyl group on C-2 Choices b and c are both correct Choices a and d are both correct Submit Answer Tries 0/1
How would you draw the most stable conformation of cis-1-ethyl-2-methylcyclohexane? o Axial ethyl group on C-1, Axial methyl group on C-2 O Axial ethyl group on C-1, Equatorial methyl group on C-2 O Equatorial ethyl group on C-1, Axial methyl group on C-2 O Equatorial ethyl group on C-1, Equatorial methyl group on C-2 O Choices b and c are both correct O Choices a and d are both correct Submit Answer Tries 0/1 How would you draw the most...