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Hi, for the first question, I would like to know why the CN
group and Methyl group are both pointing out of the plane? How do I
look in order to be able to get the same answer? For the second
question, how do I know which one will point out of the plane and
which one will go into the plane?
WHAT OTHER INFO DO U NEED ALL INFO HAVE BEEN PROVIDED
how does the structure on thr bottom left have 2 stereocenters? I
see both Carbons in the CH3 being bonded directly to a H, -CH2 and
another -CH3. i do not see how there are 4 different groups that
each chiral carbon is attached to
os structures are show cand trans molecules srent sequence of groups ul (CH3) group and les initially, a-CH- ction gives, initially, a aded to four different 1,2-Disubstituted Cyclohexanes Now consider 1,2-dimethylcyclohexane. The cis and trans...
In this problem, how do you know which atoms or groups are
going away, towards you, or in plane from the chiral center? for
example, why do they assume that hydrogen is going away (dotted
line) and Ch3 is coming towards you (bold colored line)? And how do
you know which direction Ch2Ch2Br and Br is going in? its just a
single line (Not dotted or bold). I know directions are important
in determining R/S.
Ex: In the second photo...
Cart B: cis and trans 1,2-dibromo cyclopentane 1. Draw cis-1,2-dibromocyclopentane and its mirror image below: 3 H HY Hmong CM 1 2. How many carbons in this compound are chiral, (bonded to 4 0 groups? 2 cox bons 3. Are the molecules superimposable? us, they axb. 4. Can this compound exist as a pair of enantiomers? 5. Which atom (according to IUPAC nomenclature) in the ring does the plane of symmetry cut in half? Carbon * 6. Draw trans-1,2-dibromocyclopentane and...
NMR Help please!
Based on the molecular formula and the UN/DBE you calculated, check all the functional group that could be present in compound B? Examine the IR spectrum provided for Compound B. The peaks below 1500 cannot be used to make any structural assignments because they are i fingerprint region. There are the two important peaks in this IR spectrum, What is each peak most likely due to? Earlier, using the molecular formula and the UN/BE, you came up...
Need help on 6a and 6b. (Molecule 1&2, their pH and group
are circled in blue)
6a. On the answer sheet, draw molecule 1 and molecule 2 (at the indicated pH) and also draw their conjugate bases. (For any molecules you do not know, look up the structure on google/wikipedia/text). Based on ionic stabilization effects, which molecule would have a lower pKa for the group listed? Explain in 2-3 sentences. b. timt-1 molecule l molecule 2 pH group phenylalanine l...
19-26 thanks!
19-29*
PART 3: 2,3-BUTANEDIOL CH-CH(OH)-CH(OH)-CH, mirror images, not superimposable Build as many models of 2,3-butanediol as you can. First, attach two carbons with a single bond. To each carbon add one carbon, one hydrogen, and one oxygen. To complete the structure, Ti the remaining hydrogen atoms. Remember, a model is not different if it is completely superimposable on one already constructed! 13. How many stereochemically different models are possible for 2,3-butanediol? 14. What characteristic does one of these...
3. (4 pts) Complete the Fischer projection drawn below by adding the four substituents to the chiral carbon of (s)-2-methyl-3-bromo-hexane. 4. (4 pts) Draw a wedge and dash structure representing (1R 2R,3S)-1,2- dichloro3-ethylcyclohexane. 5. (4pts) 2-bromobutane is shown below. Is this (R)-2-bromobutane or (S)-2 bromobutane? 6. (6 pts) For each chiral carbon in ascorbic acid (vitamin C), shown below, assign Ror S to each stereocenter. How many stereoisomers of ascorbic acid are possible? OH HO ОН 7. (9 pts) (Are...
Here is a molecule. Do a retro synthesis (reaction
scheme) on the molecule and go all the way back to produce the
molecule until you can't go back anymore (think benzene or carbon).
You can use any source and synthesis/reaction to produce the
molecule above. Some notes about the molecule:
I would say start by writing down all the one step
reactions you know that would make the molecule without considering
from where the starting material comes. With some luck...
Here is a molecule. Do a retro synthesis (reaction
scheme) on the molecule and go all the way back to produce the
molecule until you can't go back anymore (think benzene or carbon).
You can use any source and synthesis/reaction to produce the
molecule above. Some notes about the molecule:
I would say start by writing down all the one step
reactions you know that would make the molecule without considering
from where the starting material comes. With some luck...