Which of the following reagents should be used to convert hex-3-yne to (Z)-hex-3-ene? A) H2, Pt...
Which of the following reagents should be used to convert hex-3-yne to (Z)-hex-3-ene?
A) H2, Pt B) Na, NH3 C) H2, Lindlar's catalyst D) H2SO4, H2O E) HgSO4, H2O
Homework Answers
Conversion of hex-3-yne to (Z)-hex-3-ene?
we show the Mechanism :
Step 1 ) Abrorption of H2 on metal surface
Step 2 )
Approach of alkyne molecule :
So this is syn addition and compund formed is cis with Linldar catalyst.
Add Answer to:
Which of the following reagents should be used to convert hex-3-yne to (Z)-hex-3-ene?
A) H2, Pt...
For each of the following transformations, select the series of reagents that most effectively accomplishes it....
For each of the following transformations, select the series of
reagents that most effectively accomplishes it.
Question 1 10 points Save Answer **there may be more than one correct answer** (2)-2-methylhept-3-ene ??? 2-methylhept-3-yne O H2, Ni2B o H2, Pt O NaNH2 O H2, Lindlar's catalyst Na/NH3 Question 2 10 points Save Answer ??? o 1. NaNH2 2. 1-bromopropane O 1. NaNH2 2. bromoethane O 1. NaNH2 2. 2-bromopropane O 1. Na/NH3 2. 2-bromobutane Question 3 10 points Save Answer ???...
Starting from (R)-3-methylhex-1-yne as the substrate at the center of your page, draw a reaction map showing the regiochemical and stereochemical outcome or outcomes for each of the following series of reagents. Name each of your products, including stere
Starting from (R)-3-methylhex-1-yne as the substrate at the center of your page, draw a reaction map showing the regiochemical and stereochemical outcome or outcomes for each of the following series of reagents. Name each of your products, including stereochemical designations for any chirality centers that are generated.A. HgSO4, H2SO4, H2OB. 1. 9-BBN; 2. H2O2, NaOHC. Br2, CCl4D. HBrE. xs HBrF. HBr, ROORG. xs HBr, ROORH. 1. O3; 2. H2OI. H2, Lindlar's catalystJ. Na, NH3
3) Show how hex-1-yne might be converted to: a. 1-bromohex-1-ene b. 1,1,2,2-tetrabromohexane C. 2-bromohex-1-ene d. 2-bromohexane...
3) Show how hex-1-yne might be converted to: a. 1-bromohex-1-ene b. 1,1,2,2-tetrabromohexane C. 2-bromohex-1-ene d. 2-bromohexane e. 2,2-dibromohexane 4) For each compound, give the product(s) expected from (1) HgSo./H2SO4-catalyzed hydration and (2) hydroboration-oxidation. a. hex-1-yne b. hex-2-yne c. hex-3-yne d. cyclodecyne 5) Predict the product(s) you would expect from treatment of each compound with (1) dilute, neutral KMnO, and (2) warm, basic KMnO, then dilute acid. a. hex-1-yne b. hex-2-yne c. hex-3-yne d. 2-methylhex-3-yne e. But-1-ene → butan-2-ol 6) Show...
6. Starting with propyne, outline syntheses of the following (a) hex-2-yne (b) (E)-pent-2-ene (c) (Z)-pent-2-ene
6. Starting with propyne, outline syntheses of the following (a) hex-2-yne (b) (E)-pent-2-ene (c) (Z)-pent-2-ene
Select the best reagents for each of the following transformations. You should only use each set...
Select the best reagents for each of the following transformations. You should only use each set of reagents once. You can record your answers on this worksheet, or type/write on another sheet of paper. You only need to submit the question number and the letter corresponding to the set of reagents from the table below. A E 1) 9-BBN H2(g), Pd/C 1 eq. HBr 2 eq. HBr H2SO4, HgSO4, H, 2) H2O, NaOH(aq) H H2(g), Lindlar's catalyst Naº, NH3(1), -78...
Identify the reagents to be used in the following synthetic schemes: (Specify the reagents you would...
Identify the reagents to be used in the following synthetic schemes: (Specify the reagents you would use to carry out the conversion by using letters from the table. Write the letters in the order that they are used, e.g., abc.) Scheme1 CH3 CH3 CH3 CH3 OH Scheme 2 Br CH3 H3C CH3 CH3 a. BH3, THF then H202, OH h. NBS, CCl b. PBr3 c. Mg, ether then H3o* d. (CH3)2Culi e. Br2 f. NaNH2, NH3 g. H2O, H2SO4, HgSO4...
18. Which sequence of reagents would be expected to accomplish the transformation of 1-butyne shown below?...
18. Which sequence of reagents would be expected to accomplish the transformation of 1-butyne shown below? A) 1)H2O/H2SO4, HgSO4 cat.; B) 1)HBr C)1)H2, Lindlar catalyst; D) )HBr, peroxides; E) O 2) H2, Pt 2) H2, Pt; 2) BH3*THF; 2) NaOH; 2) H2O 3) NaOH 3) H202, NaOH 3) H2, Pt
Select the best reagents for each of the following transformations. You should only use each set...
Select the best reagents for each of the following transformations. You should only use each set of reagents once. You can record your answers on this worksheet, or type/write on another sheet of paper. You only need to submit the question number and the letter corresponding to the set of reagents from the table below. H2(g), Pd/C 1 eq. HBr 2 eq. HBr H2SO4, HgSO4, H2O 1) 9-BBN 2) H2O2, NaOH(aq) H Naº, NH3(1), -78 °C 1 eq. Br2, CH2Cl2...
Which of the following reaction conditions can achieve the following transformation? Assume reagents are in excess....
Which of the following reaction conditions can achieve the following transformation? Assume reagents are in excess. ? yne-robot ene-robot NaNH2, NH3 H2, Lindlar Na, NH3 O KOC(CH3)3 H2, Pd O NaOCH3 Modt
, The reagents needed to convert 2-butyne to frans-2-butene are A) H2 and Pt/C B) H/Lindlar's...
, The reagents needed to convert 2-butyne to frans-2-butene are A) H2 and Pt/C B) H/Lindlar's catalyst C) L/NH D) Ca/NHs E) H2,LİNH3 For questions 15 through 17, identify the major product for each of the reactions. 15. 2 Br2 H-CH, ether Br CH s B) HC c) A) HyC Br Br. Br CH Br CH3 E) H D) HC 16. 1. BH,/THF он A) он он E) D) 1. NaNH/THF 2. CH,Br B) A) Page 13 of 15 HjC
For each of the following transformations, select the series of
reagents that most effectively accomplishes it.
Question 1 10 points Save Answer **there may be more than one correct answer** (2)-2-methylhept-3-ene ??? 2-methylhept-3-yne O H2, Ni2B o H2, Pt O NaNH2 O H2, Lindlar's catalyst Na/NH3 Question 2 10 points Save Answer ??? o 1. NaNH2 2. 1-bromopropane O 1. NaNH2 2. bromoethane O 1. NaNH2 2. 2-bromopropane O 1. Na/NH3 2. 2-bromobutane Question 3 10 points Save Answer ???...
3) Show how hex-1-yne might be converted to: a. 1-bromohex-1-ene b. 1,1,2,2-tetrabromohexane C. 2-bromohex-1-ene d. 2-bromohexane e. 2,2-dibromohexane 4) For each compound, give the product(s) expected from (1) HgSo./H2SO4-catalyzed hydration and (2) hydroboration-oxidation. a. hex-1-yne b. hex-2-yne c. hex-3-yne d. cyclodecyne 5) Predict the product(s) you would expect from treatment of each compound with (1) dilute, neutral KMnO, and (2) warm, basic KMnO, then dilute acid. a. hex-1-yne b. hex-2-yne c. hex-3-yne d. 2-methylhex-3-yne e. But-1-ene → butan-2-ol 6) Show...
6. Starting with propyne, outline syntheses of the following (a) hex-2-yne (b) (E)-pent-2-ene (c) (Z)-pent-2-ene
Select the best reagents for each of the following transformations. You should only use each set of reagents once. You can record your answers on this worksheet, or type/write on another sheet of paper. You only need to submit the question number and the letter corresponding to the set of reagents from the table below. A E 1) 9-BBN H2(g), Pd/C 1 eq. HBr 2 eq. HBr H2SO4, HgSO4, H, 2) H2O, NaOH(aq) H H2(g), Lindlar's catalyst Naº, NH3(1), -78...
Identify the reagents to be used in the following synthetic schemes: (Specify the reagents you would use to carry out the conversion by using letters from the table. Write the letters in the order that they are used, e.g., abc.) Scheme1 CH3 CH3 CH3 CH3 OH Scheme 2 Br CH3 H3C CH3 CH3 a. BH3, THF then H202, OH h. NBS, CCl b. PBr3 c. Mg, ether then H3o* d. (CH3)2Culi e. Br2 f. NaNH2, NH3 g. H2O, H2SO4, HgSO4...
18. Which sequence of reagents would be expected to accomplish the transformation of 1-butyne shown below? A) 1)H2O/H2SO4, HgSO4 cat.; B) 1)HBr C)1)H2, Lindlar catalyst; D) )HBr, peroxides; E) O 2) H2, Pt 2) H2, Pt; 2) BH3*THF; 2) NaOH; 2) H2O 3) NaOH 3) H202, NaOH 3) H2, Pt
Select the best reagents for each of the following transformations. You should only use each set of reagents once. You can record your answers on this worksheet, or type/write on another sheet of paper. You only need to submit the question number and the letter corresponding to the set of reagents from the table below. H2(g), Pd/C 1 eq. HBr 2 eq. HBr H2SO4, HgSO4, H2O 1) 9-BBN 2) H2O2, NaOH(aq) H Naº, NH3(1), -78 °C 1 eq. Br2, CH2Cl2...
Which of the following reaction conditions can achieve the following transformation? Assume reagents are in excess. ? yne-robot ene-robot NaNH2, NH3 H2, Lindlar Na, NH3 O KOC(CH3)3 H2, Pd O NaOCH3 Modt
, The reagents needed to convert 2-butyne to frans-2-butene are A) H2 and Pt/C B) H/Lindlar's catalyst C) L/NH D) Ca/NHs E) H2,LİNH3 For questions 15 through 17, identify the major product for each of the reactions. 15. 2 Br2 H-CH, ether Br CH s B) HC c) A) HyC Br Br. Br CH Br CH3 E) H D) HC 16. 1. BH,/THF он A) он он E) D) 1. NaNH/THF 2. CH,Br B) A) Page 13 of 15 HjC
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