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2 (8 marks). Optically active compound 1 of molecular formula C6H12 was treated with CH212 over...
ons (40 marks). Place your answers in the spaces Swer sheet. 1 (17 marks). For reactions...
ons (40 marks). Place your answers in the spaces Swer sheet. 1 (17 marks). For reactions (a)-(c), draw clear skeletal (line-bond) structures of reactants A-C and provide reagents X-Z in the boxes on the answer sheet. For reactions (d) and (e), draw all isomers. Note-no credit will be given for drawing molecules using other structural representations (e.g.condensed structures). (a) он он X an alkene (b) В CoH16 он (c) 1) Z, Mg/ether 2) Hао* degree of unsaturation 5 (d) all...
eference Compound A, CH,60, was found to be an optically active alcohol. Despite its apparent unsaturation,...
eference Compound A, CH,60, was found to be an optically active alcohol. Despite its apparent unsaturation, no hydrogen was absorbed on catalytic reduction over a Pd/C eatalyst. On treatment of A with dilute H,SO dehydration occurred and an optically inactive alkene B, CH14 was produced as the major product. Alkene B, on ozonolysis, gave two products. Product C, C-H,0, was shown to be an aldehyde while product D, CH,O, was shown to be a ketone. Draw the structure of compound...
B3: The following optically active oone optically active, one with no optical ac alkene, upon hydrogeraito explain this observation. n, yields two 4 pts H2 2 different products Pd/C CH3 B4: 1,3-...
B3: The following optically active oone optically active, one with no optical ac alkene, upon hydrogeraito explain this observation. n, yields two 4 pts H2 2 different products Pd/C CH3 B4: 1,3-butadiene, when treated with HBr, gives a mix of two product neither of which is 4-bromobut-1-ene. Predict both these products using mechanism that involves a single carbocation intermediate: 4 4-bromobut-1-ene Anot formed! HBr C5: Terminal alkynes are moderately acidic synthetically. When pent-1-yne is treated with a strong base [sodium...
Practice Problem 21.55 When optically active (S)-2-methylcyclopentanone is treated with aqueous base, the compound loses its...
Practice Problem 21.55 When optically active (S)-2-methylcyclopentanone is treated with aqueous base, the compound loses its optical activity. Explain this observation and draw a mechanism that shows how racemization och For the mechanism, draw the curved arrows as needed. Include lone pairs and charges in your answer. Do not draw out any hydrogen explicitly in your products. Do not use abbreviations such as Meow 21.55a Get help answering Molecular Drawing ques Correct Draw (5)-2-methylcyclopentanone. Attempts: 2 of 4 used Step...
When 2-bromo-3,3-dimethylbutane is treated with K+ −OC(CH3)3, a single product T having molecular formula C6H12 is...
When 2-bromo-3,3-dimethylbutane is treated with K+ −OC(CH3)3, a single product T having molecular formula C6H12 is formed. When 3,3-dimethyl-2-butanol is treated with H2 SO4, the major product U has the same molecular formula. Given the following 1H NMR data, what are the structures of T and U? Explain in detail the splitting patterns observed for the three split signals in T.1H NMR of T: 1.01 (singlet, 9 H), 4.82 (doublet of doublets, 1 H, J = 10, 1.7 Hz), 4.93...
1 2 References] Draw a structural formula for the alkene you would use to prepare the...
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References] Draw a structural formula for the alkene you would use to prepare the alcohol shown by hydroboration/oxidation CH3 CH3CHCH2CH2OH . You do not have to consider stereochemistry. . You do not have to explicitly draw H atoms In cases where there is more than one answer, just draw one. An alkene having the molecular formula CsHis is treated sequentially with ozone (0:) and zinc/acetic acid to give the product/s shown. 0% Draw a structural formula for the...
Alkene reaction and mechanisms practice exercise 1) O₃ 2) (CH3)2S 25) Treatment of cyclopentene with peroxybenzoic...
Alkene reaction and mechanisms practice exercise
1) O₃ 2) (CH3)2S 25) Treatment of cyclopentene with peroxybenzoic acid A) results in oxidative cleavage of the ring to produce an acyclic compound B) yields a meso epoxide C) yields an equimolar mixture of enantiomeric epoxides D) gives the same product as treatment of cyclopentene with Os04 E) none of the above 26) Provide a detailed, step-by-step mechanism for the reaction shown below. но Br2 na + HBT Br 27) Provide a detailed,...
18. Draw the structures of Compound 18a. and 18b. (18 pts), clearly indicate your assignments of...
18. Draw the structures of Compound 18a. and 18b. (18 pts), clearly indicate your assignments of all proton resonances (8 pts). Calculate the Unsaturation Index of each compound (4 pts) (30 points total) 30 Unsat. Index = (2C+2-H-X+NY2 = 200 25 e = 2.00 ppm, 4.90 f = 1.27 ppm, 20 720 Compound 18a: C,H,O, singlet, 2H triplet, 3H 127 15 d = 2.66 ppm, a = 7.21 ppm, b = 7.18 ppm, doublet, 2H doublet, 2H C = 4.90...
ons (40 marks). Place your answers in the spaces Swer sheet. 1 (17 marks). For reactions (a)-(c), draw clear skeletal (line-bond) structures of reactants A-C and provide reagents X-Z in the boxes on the answer sheet. For reactions (d) and (e), draw all isomers. Note-no credit will be given for drawing molecules using other structural representations (e.g.condensed structures). (a) он он X an alkene (b) В CoH16 он (c) 1) Z, Mg/ether 2) Hао* degree of unsaturation 5 (d) all...
eference Compound A, CH,60, was found to be an optically active alcohol. Despite its apparent unsaturation, no hydrogen was absorbed on catalytic reduction over a Pd/C eatalyst. On treatment of A with dilute H,SO dehydration occurred and an optically inactive alkene B, CH14 was produced as the major product. Alkene B, on ozonolysis, gave two products. Product C, C-H,0, was shown to be an aldehyde while product D, CH,O, was shown to be a ketone. Draw the structure of compound...
B3: The following optically active oone optically active, one with no optical ac alkene, upon hydrogeraito explain this observation. n, yields two 4 pts H2 2 different products Pd/C CH3 B4: 1,3-butadiene, when treated with HBr, gives a mix of two product neither of which is 4-bromobut-1-ene. Predict both these products using mechanism that involves a single carbocation intermediate: 4 4-bromobut-1-ene Anot formed! HBr C5: Terminal alkynes are moderately acidic synthetically. When pent-1-yne is treated with a strong base [sodium...
Practice Problem 21.55 When optically active (S)-2-methylcyclopentanone is treated with aqueous base, the compound loses its optical activity. Explain this observation and draw a mechanism that shows how racemization och For the mechanism, draw the curved arrows as needed. Include lone pairs and charges in your answer. Do not draw out any hydrogen explicitly in your products. Do not use abbreviations such as Meow 21.55a Get help answering Molecular Drawing ques Correct Draw (5)-2-methylcyclopentanone. Attempts: 2 of 4 used Step...
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References] Draw a structural formula for the alkene you would use to prepare the alcohol shown by hydroboration/oxidation CH3 CH3CHCH2CH2OH . You do not have to consider stereochemistry. . You do not have to explicitly draw H atoms In cases where there is more than one answer, just draw one. An alkene having the molecular formula CsHis is treated sequentially with ozone (0:) and zinc/acetic acid to give the product/s shown. 0% Draw a structural formula for the...
Alkene reaction and mechanisms practice exercise
1) O₃ 2) (CH3)2S 25) Treatment of cyclopentene with peroxybenzoic acid A) results in oxidative cleavage of the ring to produce an acyclic compound B) yields a meso epoxide C) yields an equimolar mixture of enantiomeric epoxides D) gives the same product as treatment of cyclopentene with Os04 E) none of the above 26) Provide a detailed, step-by-step mechanism for the reaction shown below. но Br2 na + HBT Br 27) Provide a detailed,...
18. Draw the structures of Compound 18a. and 18b. (18 pts), clearly indicate your assignments of all proton resonances (8 pts). Calculate the Unsaturation Index of each compound (4 pts) (30 points total) 30 Unsat. Index = (2C+2-H-X+NY2 = 200 25 e = 2.00 ppm, 4.90 f = 1.27 ppm, 20 720 Compound 18a: C,H,O, singlet, 2H triplet, 3H 127 15 d = 2.66 ppm, a = 7.21 ppm, b = 7.18 ppm, doublet, 2H doublet, 2H C = 4.90...
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