4. (6pts) Label each molecule as a nucleophile or electrophile AND draw an arrow pointing to...
2. (i) (6pts) Draw an arrow pointing to each carbon that is considered to be a stereocenter in the structures below. There will be a 1pt will be deduction for each carbon that is mislabeled as a stereocenter. (ii) (12pts) Label the absolute configuration at each carbon stereocenter as either (R) or (S). (b) LL " "" " Br I
Label:
-nucleophile
-electrophile
-leaving group
Draw a reasonable, step by step arrow pushing mechanism for
the overall reaction. You may abbreviate non-involved parts of any
of the molecules with 'R' groups, and you can assume that water is
present in the reaction (to act as either an acid or a base).
REVIEW INSIGHT Hмт RHNOC ON NH NO но он но он Lysine peptide S-adenosylmethionine Methyllysine peptide S-adenosy homocysteine substrate product Figure 1 Mechanism of lysine methylation catalysed by histone...
1) Draw an arrow pointing to EACH carbon that isnconsidered to
be a “stereocenter” in thebstruxtures below.
2) Label the absolute configuration at each carbon
stereocentee as either (R) or (S).
3) show the work that justifies each label
2. (18pts) (i) Draw an arrow pointing to each carbon that is considered to be a stereocenter in the structures below. (ii) Label the absolute configuration at each carbon stereocenter as either (R) or (S). (iii) Show work that justifies each...
4. (4 pts) Label the nucleophile and electrophile and draw the products of the following Si2 reaction. Be sure to indicate the appropriate stereochemistry. acetone N3 (2 pts) Would the reaction above be faster or slower if each of the following substrates were used instead of trans-1-iodo-4-methylcyclohexane? 5. a. iodoethane FASTER SLOWER b. trans-1-chloro-4-methylcyclohexane FASTER SLOWER
Label:
1. nucleophile
2. Electrophile
3. Leaving group
Also, draw a reasonable, step by step arrow pushing mechanism
for the overall reaction!
REVIEW INSIGHT H RHNOC HMTS ONA NE но он но он Lysine peptide S-adenosylmethionine Methyllysine peptide S-adenosylhomocysteine Substrate product Figure 1 Mechanism of lysine methylation catalysed by histone lysine methyltransferases. The lysine amino group of the substrate histone polypeptide engages in an SN 2 reaction with the activated co-factor S-adenosylmethionine (SAM), resulting in the formation of an N-methylated...
(a.) For each of the following reactions, identify the
nucleophile and electrophile and draw the electron motion arrows
required to generate the product given.
(b.) The spectrum above was measured on a sample with
molecular formula C4H7ClO2. In the box in the middle of the
spectrum, draw the structure of a conpound with this formula that
is consistent with the spectrum above (there are wuite a few
structures that woukd fit). Do not attempt to match the fingerprint
region.
(c.)...
2. (18pts) (i) Draw an arrow pointing to each carbon that is considered to be a stereocenter in the structures below. (ii) Label the absolute configuration at each carbon stereocenter as either (R) or (S). (iii) Show work that justifies each label. (1pt will be deducted for each carbon that is mislabeled as a stereocenter. All other parts must be correct to receive credit for each case.) a) (c) (d) OH HO. OH SH
2. (18pts) (i) Draw an arrow pointing to each carbon that is considered to be a stereocenter in the structures below. (ii) Label the absolute configuration at each carbon stereocenter as either (R) or (S). (iii) Show work that justifies each label. (1pt will be deducted for each carbon that is mislabeled as a stereocenter. All other parts must be correct to receive credit for each case.) (a) OH HO OH
Draw The arrow pushing mechanisms of the following reactions: (6pts
each, 18 pts total)
U Draw the arrow-pushing mechanism of the following reactions: (6pts each, 18pts total) U Question 8 6 pts ОН OH Upload Choose a File Question 9 6 pts H,09 Brz Upload Choose a File Question 10 6 pts KOH + Lo & MeOH, Heat Upload Choose a File
2. (18pts) (i) Draw an arrow pointing to each carbon that is considered to be a stereocenter in the structures below. (ii) Label the absolute configuration at each carbon stereocenter as either (R) or (S). (iii) Show work that justifies each label. (1pt will be deducted for each carbon that is mislabeled as a stereocenter. All other parts must be correct to receive credit for each case.) (b) (c) (d) Но НО Он SH