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4. Which pall or suructures are enantiomers? COOH OH CH3 Ноосон нон CH2CH3 Br CH CI...
1. MCPBA 2. H, H20 CH(CH3)2 H3CH2C- OH H- OH CH2CH3 CH(CH3)2 CH(CH3)2 CH(CH3)2 HECH,C- OH...
1. MCPBA 2. H, H20 CH(CH3)2 H3CH2C- OH H- OH CH2CH3 CH(CH3)2 CH(CH3)2 CH(CH3)2 HECH,C- OH HOCH,CH, HOCHCH, HOH HOH H- OH CH2CH2 C H2CH3 CH2CH3 A. I and II B. III and IV c. I and IV D. II and III E. I and 111
H 9. For each molecule: 1) Identify all possible enantiomers and distinguish those that are enantiomers, diastereomers...
H 9. For each molecule: 1) Identify all possible enantiomers and distinguish those that are enantiomers, diastereomers and meso compounds. II) Assign the absolute configuration of chiral carbons in each molecule OCH3 HO+Br HS+CN H2N-CH3 HOSH Он HO+CH3 н OCH3 Сн, ососна Br +D HOCH HC-BrHN+Br CH 8. For the following compounds, assign the absolute configuration for those with chiral carbons and identify those that are NOT enantiomers HO C-C-OHY -CCIN 13CH3 HAN CH3 CH3 осі H-CH3 H2N+CH H O+COOH...
CHM 211 STEREOCHEMISTRY Chapter 5 3. Hexane and 3-methylpentane are examples of: (a) Enantiomers (6) Constitutional...
CHM 211 STEREOCHEMISTRY Chapter 5 3. Hexane and 3-methylpentane are examples of: (a) Enantiomers (6) Constitutional isomers (c) Diasercomers (d) Conformers 4. Which of the following is a meso compound? CH CHE CH Htci (a) CH (b) " (d) WH+ CH.CH H- CH.CH Htc CH H 5. Which of the following is NOT true about enantiomer? (a) The have the same boiling point (b) The have the same melting poing (c) The have the same density (d) The have the...
please help! 1) Which of the following compounds is chiral? CH3-1-ci CH3-1-ci Br -1-ci CH3 CH3-1-Br...
please help!
1) Which of the following compounds is chiral? CH3-1-ci CH3-1-ci Br -1-ci CH3 CH3-1-Br CH3-1-ci CH3 3-1-C CH3 CH3 ci--c1 Br--Br CH3 2) What is the relationship between the structures shown below? H-|-Brand Br- -CH3 CH3 o Constitutional isomers Identical compounds O Diastereomers O Enantiomers O Configurational isomers 4) What is the product of the following reaction? MoBr 2. Fich, o V. HOCHẶCHỌCH-O V. II. CH CHCH-(O) OH CH2OH ON CH3CH II. HOCH2CH2– O III oll ON 01...
g) Which structure is Z-2-bromo-3-methyl-2-pentene? CH3 H3C CH2CH3 H C=C CH-CH,CH, CH3 CH3 Вісн. C=C CH3...
g) Which structure is Z-2-bromo-3-methyl-2-pentene? CH3 H3C CH2CH3 H C=C CH-CH,CH, CH3 CH3 Вісн. C=C CH3 Br н Br | BÁ CHẠCH, C=C CH, CHỊCH, 10) Which compounds contain stereocenters? D) 1-chloropentane II) 2-chloropentane III) 3-chloropentane IV) 1,2-dichloropentane 11) Aspartame is an artificial, non-saccharide sweetener. It is made from two amino acids phenylalanine (methyl ester) and aspartic acid. Both aminoacids have one stercocenter. Both stereocenters have S-stereoconfiguration. Which of the two structures is aspartame? H2N-C-C-N-C-0-0 CH2 CH2 c=0 HO HO...
11. . Which of the following Fischer projections represent a pair of enantiomers? CHE CH2CH3 CH2...
11. . Which of the following Fischer projections represent a pair of enantiomers? CHE CH2CH3 CH2 -HH-FCC-HB- H HCB-HB- CH2CH3 CH₂CH3 CH₂ HC1h a I and II d. II and III bil and y e. Ивие c I and IV
І ІСІ 3.31 Which of the following are meso compounds! Н Br Br, CH3 | HO...
І ІСІ 3.31 Which of the following are meso compounds! Н Br Br, CH3 | HO CH, (b) (а) Br. C н / CH, -C C-C Н / CH Br VOH CH, ОН НО CH,OH н-ОН SCH, (е) -ОН " НОН CH,OH ОН CHO ОН CH,OH HOH CH,OH ОН (h) нтон HT ОН CH,OH нтон CH,OH CH,OH
22. Which of the following structures has the Sconfiguration? CH2CH3 CH2CH3 HECCI ......CH н OH ну...
22. Which of the following structures has the Sconfiguration? CH2CH3 CH2CH3 HECCI ......CH н OH ну H2CH2C сна A) Only 1 B) Only II C) Only I and II D) I, II and III 23. Which of the following structures has the configuration? CH,CH, CH.CH OH ...CHHECH H HỊCHẠC \ D) I, II and III A) Only I B) Only II C) Only I and II 24. What is the relationship between the following compounds? OH om B) Diastereomers C)...
8. Label each as enantiomers, diasteriomers or as the same compound. For a.), also label each...
8. Label each as enantiomers, diasteriomers or as the same compound. For a.), also label each compound as erythro or threo. (14 Points - 2 Points Each Answer) CH CH HO H HO -H ci H H -CI a. Same CH3 Erythro or Threo Сн, Enantiomer Diasteriomer Erythro or Threo сна CH3 Br -Н H -Br + Br -H H -Br b. CHE CH3 Enantiomer Diasteriomer Same CH3 CHE Br -H H -Br H CI CI -Н CH2CH3 CH2CH3 Enantiomer...
15) The most stable conformation of 3-bromo-2-methylpentane, viewed through the C-2-C-3 bond (i.e., C-2 in the front, C-3 in the back) Br CH3 CH 3 CH3 H2CH H3C CH(CH3)2 CH3 CH3 CH3 CH2CH3 H2CH3 IV a)...
15) The most stable conformation of 3-bromo-2-methylpentane, viewed through the C-2-C-3 bond (i.e., C-2 in the front, C-3 in the back) Br CH3 CH 3 CH3 H2CH H3C CH(CH3)2 CH3 CH3 CH3 CH2CH3 H2CH3 IV a) I b) II c) III d) IV e) V
15) The most stable conformation of 3-bromo-2-methylpentane, viewed through the C-2-C-3 bond (i.e., C-2 in the front, C-3 in the back) Br CH3 CH 3 CH3 H2CH H3C CH(CH3)2 CH3 CH3 CH3 CH2CH3 H2CH3 IV...
1. MCPBA 2. H, H20 CH(CH3)2 H3CH2C- OH H- OH CH2CH3 CH(CH3)2 CH(CH3)2 CH(CH3)2 HECH,C- OH HOCH,CH, HOCHCH, HOH HOH H- OH CH2CH2 C H2CH3 CH2CH3 A. I and II B. III and IV c. I and IV D. II and III E. I and 111
H 9. For each molecule: 1) Identify all possible enantiomers and distinguish those that are enantiomers, diastereomers and meso compounds. II) Assign the absolute configuration of chiral carbons in each molecule OCH3 HO+Br HS+CN H2N-CH3 HOSH Он HO+CH3 н OCH3 Сн, ососна Br +D HOCH HC-BrHN+Br CH 8. For the following compounds, assign the absolute configuration for those with chiral carbons and identify those that are NOT enantiomers HO C-C-OHY -CCIN 13CH3 HAN CH3 CH3 осі H-CH3 H2N+CH H O+COOH...
CHM 211 STEREOCHEMISTRY Chapter 5 3. Hexane and 3-methylpentane are examples of: (a) Enantiomers (6) Constitutional isomers (c) Diasercomers (d) Conformers 4. Which of the following is a meso compound? CH CHE CH Htci (a) CH (b) " (d) WH+ CH.CH H- CH.CH Htc CH H 5. Which of the following is NOT true about enantiomer? (a) The have the same boiling point (b) The have the same melting poing (c) The have the same density (d) The have the...
please help!
1) Which of the following compounds is chiral? CH3-1-ci CH3-1-ci Br -1-ci CH3 CH3-1-Br CH3-1-ci CH3 3-1-C CH3 CH3 ci--c1 Br--Br CH3 2) What is the relationship between the structures shown below? H-|-Brand Br- -CH3 CH3 o Constitutional isomers Identical compounds O Diastereomers O Enantiomers O Configurational isomers 4) What is the product of the following reaction? MoBr 2. Fich, o V. HOCHẶCHỌCH-O V. II. CH CHCH-(O) OH CH2OH ON CH3CH II. HOCH2CH2– O III oll ON 01...
g) Which structure is Z-2-bromo-3-methyl-2-pentene? CH3 H3C CH2CH3 H C=C CH-CH,CH, CH3 CH3 Вісн. C=C CH3 Br н Br | BÁ CHẠCH, C=C CH, CHỊCH, 10) Which compounds contain stereocenters? D) 1-chloropentane II) 2-chloropentane III) 3-chloropentane IV) 1,2-dichloropentane 11) Aspartame is an artificial, non-saccharide sweetener. It is made from two amino acids phenylalanine (methyl ester) and aspartic acid. Both aminoacids have one stercocenter. Both stereocenters have S-stereoconfiguration. Which of the two structures is aspartame? H2N-C-C-N-C-0-0 CH2 CH2 c=0 HO HO...
11. . Which of the following Fischer projections represent a pair of enantiomers? CHE CH2CH3 CH2 -HH-FCC-HB- H HCB-HB- CH2CH3 CH₂CH3 CH₂ HC1h a I and II d. II and III bil and y e. Ивие c I and IV
І ІСІ 3.31 Which of the following are meso compounds! Н Br Br, CH3 | HO CH, (b) (а) Br. C н / CH, -C C-C Н / CH Br VOH CH, ОН НО CH,OH н-ОН SCH, (е) -ОН " НОН CH,OH ОН CHO ОН CH,OH HOH CH,OH ОН (h) нтон HT ОН CH,OH нтон CH,OH CH,OH
22. Which of the following structures has the Sconfiguration? CH2CH3 CH2CH3 HECCI ......CH н OH ну H2CH2C сна A) Only 1 B) Only II C) Only I and II D) I, II and III 23. Which of the following structures has the configuration? CH,CH, CH.CH OH ...CHHECH H HỊCHẠC \ D) I, II and III A) Only I B) Only II C) Only I and II 24. What is the relationship between the following compounds? OH om B) Diastereomers C)...
8. Label each as enantiomers, diasteriomers or as the same compound. For a.), also label each compound as erythro or threo. (14 Points - 2 Points Each Answer) CH CH HO H HO -H ci H H -CI a. Same CH3 Erythro or Threo Сн, Enantiomer Diasteriomer Erythro or Threo сна CH3 Br -Н H -Br + Br -H H -Br b. CHE CH3 Enantiomer Diasteriomer Same CH3 CHE Br -H H -Br H CI CI -Н CH2CH3 CH2CH3 Enantiomer...
15) The most stable conformation of 3-bromo-2-methylpentane, viewed through the C-2-C-3 bond (i.e., C-2 in the front, C-3 in the back) Br CH3 CH 3 CH3 H2CH H3C CH(CH3)2 CH3 CH3 CH3 CH2CH3 H2CH3 IV a) I b) II c) III d) IV e) V
15) The most stable conformation of 3-bromo-2-methylpentane, viewed through the C-2-C-3 bond (i.e., C-2 in the front, C-3 in the back) Br CH3 CH 3 CH3 H2CH H3C CH(CH3)2 CH3 CH3 CH3 CH2CH3 H2CH3 IV...
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