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Classify the biomolecules below as chiral or non-chiral: OH O H H-C-OH C=0 HO-C-H H ОН...
3) Which of the following compounds is chiral? A) H Н-С-н н B) H HO C-OH Н C) CH3 HO-C-H Cl D) Br Н-С-ОН н E) C Br- C-C Br 4) In the L- isomer of a Fischer projection of a monosaccharide, the -OH group furthest from the carbonyl is written A) on the left of the top chiral carbon B) on the right of the top chiral carbon C) on the left of the middle chiral carbon D) on...
Which steps will be necessary to synthesize the peptide below? OH NH2 phenylalanine HO NH2 ОН NH2 isoleucine 1. The N-terminus of isoleucine will require a deactivating protecting group. II. The N-terminus of phenylalanine will require a deactivating protecting group. III. The C-terminus of of isoleucine will require activation. IV. The C-terminus of phenylalanine will require activation. II and III II and IV I and III I and IV
Question 33 The correct structure for ethyl 2-chloropentanoyl chloride is: o OH CI CI ОН OH I II III "CI CI CI IV V A. II B. I C. IV D.V E. III Question 34 A compound with the molecular formula Cg4 gBro gave the following H NMR spectrum: triplet, 5 1.4 quartet, 8 3.9 multiplet, 5 7.0 (4H) There was no evidence of an -OH band in the IR spectrum. A possible structure for the compound is: Br Br...
Which of the molecules below contain an atom with an expanded octet? OH HO -OH H-C+1 IV H-4-5-6+ sci-are: CI: III A) I and II B) III only C) IV only D) I, II, and III E) All of these molecules have an expanded octet. . What is the electron geometry of the carbon in formaldehyde, shown below? H-C-H A) linear B) bent C) trigonal planar D) trigonal pyramidal E) tetrahedral -4. What is the molecular shape of the carbon...
CHGOH c=o OH H- C=0 HOW H- OH Ho+H HOM онон H CH.CH CH OH CH OH sorbose xylulose wylo D isomer L isomer OH OH CH3 -CH-CH CH-CH CH3 -CH2-C-CH3 CH Scree 2019-12 Chiral Achiral Student F ion_Han...
Question 3 Which of the following is a keto-enol tautomeric pair? OH OH OH and and o and COM OH I II III он OH a and a and IV CA. 1 B. V C.II D. IV E. III Question 4 What would be the major product of the following reaction sequence? он PCC 1. LDA(-78C) 2. CHCHOI ? CH C1 HO వరలో I II MI o IV A. II B. I C. V D. III E. IV
C=O 2. Which of the following is an example of an aldopentose? Circle your answer. СН,ОН CH,он CH н-с-он H-6-H H-C-OH HO-C-H. H-C-H H-C-OH H-C-OH H-6-H H-C-OH CH,OH CH,OH CH OH 3. In the L- isomer of a Fischer projection of a monosaccharide, the -OH group furthest from the carbonyl is written. Circle your answer. on the left of the top chiral carbon. on the left of the middle chiral carbon. on the left of the bottom chiral carbon. on...
Which of the compounds shown below are chiral? (choose all correct) ОН o ОН E Which of the compounds shown below is/are chiral? (choose all correct answers) O For determining whether a stereogenic center is Ror S. the substituents need to be ranked. Rank the following substituents from high to low, entering a 1,2,3, or 4 next to each structure, with 1 for highest priority ranking and 4 for lowest priority ranking. 0-6 -C-H -CH_Br -CH₂OH -c-oh Which of the...
Question 24 Predict the product(s) for the following reaction. CH,OH/H 504 OCH OH OCH OH HO нусо HECO HO I II III IV От O II III O IV o none of these MacBook Air
Predict the product of this reaction: но он heat о ОН OH і т. І. HO он он What is the major product of the following reaction? 1. N.Me 2 H,0 Meo OM O Me O Meo OH Me OM O Meo OH оме Arrange the following compounds by how fast they undergo hydrolysis in H20, fastest first: OCH OI > || > III O I > III > 11 O III >> 11 Oli> I > III