(a)
Interpretation: The given pair of compounds is to be labeled as enantiomers or diastereomers.
Concept introduction:
(b)
Interpretation: The given pair of compounds is to be labeled as enantiomers or diastereomers.
Concept introduction:
(c)
Interpretation: The given pair of compounds is to be labeled as enantiomers or diastereomers.
Concept introduction:
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PKG ORGANIC CHEMISTRY
- Sub-part D,E and Farrow_forward- Common molecular moieties have easily distinguishable patterns in NMR spectra. Match the Tollowing hydrocarbons with the generalized spectra shown below. Label each splitting pattem as a singlet, doublet, triplet, or quartet. a. X,CH-CHY, b. X,CH-CH,Y с. ХCH-CH,Y d. XCH,CH, 4.0 3.5 3.0 2.5 2.0 1.5 2.0 1.5 1.0 0.5 0.0 5.5 5.0 4.5 4.0 6.0 5.5 5.0 4.5 4.0 Peak barrow_forward7 Draw the mirror image for each molecule. OH HC / COOH H OH CHO OH H-C-OH H CH3 CH₂OH 8 Determine if each compound is identical to or an enantiomer of A. CHO CH3 CH3 HO H COH a. CH CH c. CH3 HO OHC CH₂ CHO CHO OH H A 9 Rank the following groups in order of decreasing priority. a. -F, NH2,CH3, -OH b. CH, CH2CH3, -CH2CH2CH3, -(CH2)CH3 c. -NH2, -CH₂NH2, -CH3, -CH₂NHCH3 10 Label the stereocenters present in the molecules as either R or S. (a) (b) 11 Label each stereogenic center as R or S. d. – COOH, - CH,OH, – H, – CHO e. Cl, CH, -SH, -OH f. C CH, CH(CH3)2, CH2CH3, -CH=CH2 (d) Cl (e) Cl NH₂ CH CHC CH3CH2 CH3 Η CH2CH3 a. b. 12 Classify each of the following as (a) chiral or achiral; (b) optically active or inactive a. CH3(CH2)CH3 COOH b. CH CH₂ OH CH3 CH d. CH₂ OH BrC ICH 2 H C.arrow_forward
- 7. Circle those of which that are o,p-directors when attached to a benzene ringarrow_forward4. For each pair state whether the two are a) the same molecule, b) different compounds that are not isomers, c) constitutional isomers, d) diastereomers, or e) enantiomers. A) ÇEN CEN -CI B) Br Br Br CI Br HS NH2 NH H SH H 5. Write out the stepwise mechanism (include intermediates or transition state) for: CH3 CH3CH2CHCH3 Br NaOCH2CH3 -CH3CH=C(CH3)2arrow_forwardPlease help with row 2/question 2 ; the instructions for the specific column in row 2 are above row 1: Follow the instructions in each column. Hint for the last column: draw it with a wedge and again with adash – which gives the correct configuration?arrow_forward
- 16. Which molecule is (S)-2-butanol? OH A. OH C. OH B. OH D. OH OH 17. Which molecule will not rotate plane-polarized light as measure in a polarimeter? 18. Which molecule is classified as a meso compound? 19. Which molecule is (2R,3R)-2,3-butanediol? 20. Which molecule is the enantiomer of choice B?arrow_forwardPart 1: [1] X [2] H20 view structure Select the correct reagent X. There may be more than one correct answer. CH;=CHMgBr 7 (CH,=CH),CuLi CH;=CHB CH,=CHL¡ Part 2 out of 2 [1] Y [2] H20 OH Select the correct reagent Y. There may be more than one correct answer. CH;=CHMgBr O CH,=CHLI CH;=CHB (CH;=CH);CuLiarrow_forward-k ces Give the IUPAC name for each compound. CH3CH₂CHCH₂CH3 CH3 a. 3 methyl CH3 CH₂CH₂CH3 b. CH3CH₂CH₂-C-C-CH₂CH₂CH₂CH3 I H H (select) pentane CH₂CH3 c. H-C-CH₂-CHCH3 CH3 CH3 ㄱㄷ (select) ✓(select) (select) (select) (select) Varrow_forward
- 4. Ring Inversion of Substituted Cyclohexane 4.1 Two Chair Conformations of Substituted Cyclohexane Rings boat conformation is 30 hair conformation. Thus, the equilibrium favors the chair conformations. _kJ/mol higher ● ● When Ring Flipping Occurs If a substituent is initially in the axial position, after ring flipping it will be in the position (and vice-versa). equatorial 4 5 5 Connectivity does NOT change. Substituents stay on the same side of the ring that they started on! The cis-trans relationships do NOT change (cis groups stay cis and trans groups stay trans.) H3C Pown 6 3 3 6 CH3 1 CH3 2 1 2 eq I I CH3 H 180N -I 6 in energy than the down ax CH₂ On up on C 1arrow_forwardAlcohols undergo an oxidation reaction to yield carbonyl compounds on treatment with CrO3. For example, 2-tert-butylcyclohexanol gives 2-tert-butylcyclohexanone. If axial OH groups are generally more reactive than their equatorial isomers, which do you think reacts faster, the cis isomer of 2-tert-butylcyclohexanol or the trans isomer? Explain.arrow_forwardWhich compound is a meso isomer? Br H-CH₂ H₂C H H -Br CH3 A Br -H H- -Br H- CH₂ B CH₂ -Br H -Br H₂C CH3 с Br Br D I -CH₂ Br- -CH₂ -H H₂C- Br hill.com:80/olcweb/cgi/pluginpop.cgi? E onClick="window.open('http://highered.mcgraw- (29.0K)arrow_forward