1) Give the products of the synthetic sequence below.
a) 
b) 
2) What kind of selectivity is effective in the reaction below, give the mechanism for each step. Excess of BuLi will deprotonate the two hydrogens (terminal alkyne and alcohol)?
Homework Answers
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1) Give the products of the synthetic sequence below.
a)
b)
2) What kind of selectivity...
Answer the questions below regarding synthetic Scheme 1: (20 marks) Fe, HCI NO NO2 BU -...
Answer the questions below regarding synthetic Scheme 1: (20 marks) Fe, HCI NO NO2 BU - DME NaoMe Meo NH2 HN Scheme a) Give the missing reagents for Step A. What kind of selectivity does this reaction have and why? (3 marks) b) Give the structure of product 3 obtained in step B and explain the type of selectivity observed. (4 marks) c) Explain why DMF is used as a solvent in step C. (4 marks) d) Show the mechanism...
Complete the synthetic sequence below by choosing the correct reagents for each reaction and drawing the...
Complete the synthetic sequence below by choosing the correct reagents for each reaction and drawing the final product. Be sure to add hydrogens to all terminal carbons.
VI. Draw the major products for the synthetic sequence below. Do not show any intermediates or...
VI. Draw the major products for the synthetic sequence below. Do not show any intermediates or mechanisms sequence (4 pts): AICl, 2 Ho VII. Draw the major products for the e synthetic sequence below. Do not show any intermediates or mechanisms below (4 pts): AICI, Br FeBry ci Predict the major product and show the mechanism for reaction below; draw your structures legibly (4 pts): VIIl. FeCl +C Page 5 of 14
draw the products as described Draw the structure of A and B in the following synthetic...
draw the products as described
Draw the structure of A and B in the following synthetic sequence: (note structure A is a salt, don't forget the counterion.) CH, Ag, O, H,0 A- - B excess heat Draw the structure of A (one product) and B (two products) in the following synthetic sequence: (note structure A is a salt, don't forget the counterion.) CH, - excess A Ag, O, H,0 - 2B heat NH Draw the final amine product for the...
17 Provide a reason nable synthetic reaction sequence for the following conversion. Give IC agents and...
17 Provide a reason nable synthetic reaction sequence for the following conversion. Give IC agents and expected products for each major reaction step.
Draw an arrow-pushing mechanism for each step of the following two-step reaction sequence and draw the resulting product...
Draw an arrow-pushing mechanism for each step of the following
two-step reaction sequence and draw the resulting products. Don\'t
worry about the phenyl groups attached to phosphorus; just
abbreviate them with Ph.
Draw an arrow-pushing mechanism for each step of the following two-step reaction sequence and draw resulting products. Don't worry about the phenyl groups attached to phosphorus; just abbreviate them wi Ph. 1.CH,I Ph-P: -> phosphonium ylide 2.BuLi Ph Draw Hs, lone pairs, and curved arrows. Draw Hs, lone...
1. 2. What are the selectivity factors for each of the following? (give a numerical value)...
1.
2.
What are the selectivity factors for each of the following? (give a numerical value) F with a primary H = Cl with a tertiary H = Br with a secondary H = F with a tertiary H = How many different products would you expect from halogenation of the given alkanes with C12. (Give answer as a numerical value (e.g. 1, 2, 3...) B A С TE D Compound A makes 1 products. Compound B makes products. Compound...
#9) Propose a mechanism for the first step of the two-step reaction sequence shown below: Fe-...
#9) Propose a mechanism for the first step of the two-step reaction sequence shown below: Fe- B Ph- B Fe— H hy OC OC ce + H2 What kind of reaction occurs in the second step?
11. Which of the following best explains why the synthetic route shown below would be unsuccessful?...
11. Which of the following best explains why the synthetic route shown below would be unsuccessful? 2) NaNH2 3) (CHs)hCBr A) The alkynide anion is not a strong enough nucleophile to react with 1-bromopropane in step 1 m amide is not a strong enough base to deprotonate the terminal alkyne in step anion formed by reaction with sodium amide will facilitate an E2 (rather C) The alkynide than SN2) reaction with t-butyl bromide. 5oth substtution reactions will occur on the...
1. Give a sequence of reactions to accomplish the following transformation? Show mechanism 2. What reagent(s)...
1. Give a sequence of reactions to accomplish the following transformation? Show mechanism 2. What reagent(s) would accomplish the following? Show mechanism. R-CH2-NH2 R-C-NH2 3. What would result from the reactions shown below? Hsco-s-OCH3 large excess) NaOH нон H,0 но ОН "ОН (a and B) 4. Predict the major product of the following reaction. CHNNH 3 equivalents) но CHCH2OH Heat он CH2OH Draw the Haworth projection for chair conformation of a-D-Glucopyranose (shown below) CH2OH HO H OH OH
Answer the questions below regarding synthetic Scheme 1: (20 marks) Fe, HCI NO NO2 BU - DME NaoMe Meo NH2 HN Scheme a) Give the missing reagents for Step A. What kind of selectivity does this reaction have and why? (3 marks) b) Give the structure of product 3 obtained in step B and explain the type of selectivity observed. (4 marks) c) Explain why DMF is used as a solvent in step C. (4 marks) d) Show the mechanism...
Complete the synthetic sequence below by choosing the correct reagents for each reaction and drawing the final product. Be sure to add hydrogens to all terminal carbons.
VI. Draw the major products for the synthetic sequence below. Do not show any intermediates or mechanisms sequence (4 pts): AICl, 2 Ho VII. Draw the major products for the e synthetic sequence below. Do not show any intermediates or mechanisms below (4 pts): AICI, Br FeBry ci Predict the major product and show the mechanism for reaction below; draw your structures legibly (4 pts): VIIl. FeCl +C Page 5 of 14
draw the products as described
Draw the structure of A and B in the following synthetic sequence: (note structure A is a salt, don't forget the counterion.) CH, Ag, O, H,0 A- - B excess heat Draw the structure of A (one product) and B (two products) in the following synthetic sequence: (note structure A is a salt, don't forget the counterion.) CH, - excess A Ag, O, H,0 - 2B heat NH Draw the final amine product for the...
17 Provide a reason nable synthetic reaction sequence for the following conversion. Give IC agents and expected products for each major reaction step.
Draw an arrow-pushing mechanism for each step of the following
two-step reaction sequence and draw the resulting products. Don\'t
worry about the phenyl groups attached to phosphorus; just
abbreviate them with Ph.
Draw an arrow-pushing mechanism for each step of the following two-step reaction sequence and draw resulting products. Don't worry about the phenyl groups attached to phosphorus; just abbreviate them wi Ph. 1.CH,I Ph-P: -> phosphonium ylide 2.BuLi Ph Draw Hs, lone pairs, and curved arrows. Draw Hs, lone...
1.
2.
What are the selectivity factors for each of the following? (give a numerical value) F with a primary H = Cl with a tertiary H = Br with a secondary H = F with a tertiary H = How many different products would you expect from halogenation of the given alkanes with C12. (Give answer as a numerical value (e.g. 1, 2, 3...) B A С TE D Compound A makes 1 products. Compound B makes products. Compound...
#9) Propose a mechanism for the first step of the two-step reaction sequence shown below: Fe- B Ph- B Fe— H hy OC OC ce + H2 What kind of reaction occurs in the second step?
11. Which of the following best explains why the synthetic route shown below would be unsuccessful? 2) NaNH2 3) (CHs)hCBr A) The alkynide anion is not a strong enough nucleophile to react with 1-bromopropane in step 1 m amide is not a strong enough base to deprotonate the terminal alkyne in step anion formed by reaction with sodium amide will facilitate an E2 (rather C) The alkynide than SN2) reaction with t-butyl bromide. 5oth substtution reactions will occur on the...
1. Give a sequence of reactions to accomplish the following transformation? Show mechanism 2. What reagent(s) would accomplish the following? Show mechanism. R-CH2-NH2 R-C-NH2 3. What would result from the reactions shown below? Hsco-s-OCH3 large excess) NaOH нон H,0 но ОН "ОН (a and B) 4. Predict the major product of the following reaction. CHNNH 3 equivalents) но CHCH2OH Heat он CH2OH Draw the Haworth projection for chair conformation of a-D-Glucopyranose (shown below) CH2OH HO H OH OH
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