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9. Which of the following amines can be prepared by ring opening of an epoxide with...
Which of the following amines can be prepared by ring opening of an epoxide with sodium...
Which of the following amines can be prepared by ring opening of an epoxide with sodium amide followed by reduction? OH NH2 OH NH2 OH HO -NH N 3 a. only 1 b. only 1 and 2 c. only 1 and 4 d. 1, 2, 3 and 4
please answer all question and provide explanation or mechanism for each. thank you. 19. What is...
please answer all question and provide explanation or mechanism for
each. thank you.
19. What is the best choice of reagent(s) to perform the following transformation? OCHA a. CH,OH, H,SO b. CH:I, H2SO4 c. NaOCH d. CH,Li 20. What is the major organic product obtained from the following reaction of ethyl benzoate with the OH нс ск 1. 2 eq. CH3MOCI | Phocн,сн, 2. H,0* PhDcн, CH Ph CH P OHP OCH CHE a. b. 1 2 3 4 C....
Need number 2 and number 4 a and b answered The following compounds are drawn in...
Need number 2 and number 4 a and b answered
The following compounds are drawn in their acidic forms, and their pK, values are given. Draw the form in which each compound will predominate in a solution with pH 8. CH COOH pka 4.8 CH CH2OH pKa = 15.9 CH OH pKa =-2.5 CH,CH2NH pka 11.2 a. What is the conjugate base of NH? A b. What is the conjugate base of H 0? c. What is the conjugate acid...
Multiple choice. Choose the best answer possible. Which of the following is the correct order of...
Multiple choice. Choose the best answer possible.
Which of the following is the correct order of decreasing acid strength (more acidic > less acidic)? a. CH3CH2OH> CICH2COOH > BrCH2COOH b. FCH2COOH > CH3COOH > F2CHCOOH oc. FCH2COOH > CH3COOH > CH3OH d. CH3COOH > CICH2COOH > CH3OH What is the correct assignment of the names of the following substituted benzenes? PhẩCEN Ph- Ph- 2 NH 3 OH a. l = benzonitrile; 2 = benzamide; 3 = benzoic acid b. 1...
Which of the following sets of compounds contain a pair of diastereomers? (i) (1S,4R)-1,3-dichlorocyclohexane & (1R,4S)-1,3-dichlorocyclohexane...
Which of the following sets of compounds contain a pair of diastereomers? (i) (1S,4R)-1,3-dichlorocyclohexane & (1R,4S)-1,3-dichlorocyclohexane (ii) (R)-chloroiodomethanesulfonic acid & (S)-chloroiodomethanesulfonic acid (iii) (1R,4S)-1,4-cyclohexanediol & (1S,4R)-1,4-cyclohexanediol (iv) (1R,2R)-1,2-dimethylcyclopentane & (1R,2S)-1,2-dimethylcyclopentane (v) (2R,3R)-2,3,4-trihydroxybutanal & (2S,3R)-2,3,4-trihydroxybutanal Which of the following sets of compounds are enantiomers? (i) (E)-1-chloro-1-butene & (Z)-1-chloro-1-butene (ii) (1R,3S)-1,3-cyclopentanediol & (1S,3S)-1,3-cyclopentanediol (iii) (S)-1-cyano-1-propanol & (R)-1-cyano-1-propanol (iv) (1R,3S)-1,3-cyclopentanediol & (1R,3R)-1,3-cyclopentanediol (v) (R)-2-tert-butyl-2-methylcyclobutanone & (S)-2-tert-butyl-2-methylcyclobutanone
WIN Sodium elle 2.ethoxy-1-methylcyclopentanol. base Base-catalyzed: The nucleophil attacks the less substituted can which is less...
WIN Sodium elle 2.ethoxy-1-methylcyclopentanol. base Base-catalyzed: The nucleophil attacks the less substituted can which is less hindered. 0 0-CH.CH OHH CH, OCH,CH, CH, (H (b) Under acidic conditions of the protonated epoxide. T conditions, the alcohol attacks the more electrophilic tertiary carbon atom tonated epoxide. The product is (E)-2-ethoxy-2-methylcyclopentanol. CH, OH 0 Co+ CH, H CH,CH,-0-H H CH.CH PROBLEM 24-27 Predict the major products of the following reactions, including stereochemistry where appropriate. (a) 2,2-dimethyloxirane + H/ H (oxygen-labeled water) by...
Which of the following structures is most stable? 2) How many stereoisomers does the molecule below...
Which of the following structures is most stable? 2) How many stereoisomers does the molecule below have? (СН), С+ снен снаси сна OH CH₃ br. a) 3 6) 4 c) 6 d) 8 e 9 3) Which of the following molecules below are chiral? 0) to A Boh A MOH HOS DBr e) 1, 2 and 3 a) Only 1 b) 1 and 3 c) 2 and 3 d) 1 and 3 What is the relationship between the following two...
2 1 attempts left Check my work Which of the following amines can be used to resolve a racemic mi...
Please answer all questions.
The answer to question #2 is incorrect.
2 1 attempts left Check my work Which of the following amines can be used to resolve a racemic mixture of amino acids? Select all that apply. 0.5 points NH2 HIH eBook Ho Print NH2 References Be sure to answer all parts. The structure of the amino acid sequence Gly-His-Leu is shown below. Select the letters that correspond to the N-terminal(s), the C-terminal(s), and amide bond(s). (CH3)2CHCH2 0.5 points...
A. two B.four 15. Which one of the following compounds has highest boiling point? 1. CH3CH2CH3...
A. two B.four 15. Which one of the following compounds has highest boiling point? 1. CH3CH2CH3 II. CH3CH2OH III. CH3OCH3 C. six D. eight AI B. II CINI 16. What occurs when an optically active alcohol reacts with HBr to give an alkyl halide? A. complete inversion of configuration takes place at the chirality center B. incomplete and varying inversion of configuration takes place at the chirality center C. the chirality center retains its configuration D. the molecule loses its...
please answer all :) 250 Chapter 9 Chapter 9 Practice Test Which of the following reagents...
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250 Chapter 9 Chapter 9 Practice Test Which of the following reagents is the best one to use in order to wing reagents is the best one to use in order to convert methyl alcohol into methy bromide? 2. Br HBr Br NaBr Br* a. what would be the major product obtained from the reaction of the epoxide shown below containing 0.1 M HCI? CH2CH; CH CH3 b. What would be the major product obtained from...
Which of the following amines can be prepared by ring opening of an epoxide with sodium amide followed by reduction? OH NH2 OH NH2 OH HO -NH N 3 a. only 1 b. only 1 and 2 c. only 1 and 4 d. 1, 2, 3 and 4
please answer all question and provide explanation or mechanism for
each. thank you.
19. What is the best choice of reagent(s) to perform the following transformation? OCHA a. CH,OH, H,SO b. CH:I, H2SO4 c. NaOCH d. CH,Li 20. What is the major organic product obtained from the following reaction of ethyl benzoate with the OH нс ск 1. 2 eq. CH3MOCI | Phocн,сн, 2. H,0* PhDcн, CH Ph CH P OHP OCH CHE a. b. 1 2 3 4 C....
Need number 2 and number 4 a and b answered
The following compounds are drawn in their acidic forms, and their pK, values are given. Draw the form in which each compound will predominate in a solution with pH 8. CH COOH pka 4.8 CH CH2OH pKa = 15.9 CH OH pKa =-2.5 CH,CH2NH pka 11.2 a. What is the conjugate base of NH? A b. What is the conjugate base of H 0? c. What is the conjugate acid...
Multiple choice. Choose the best answer possible.
Which of the following is the correct order of decreasing acid strength (more acidic > less acidic)? a. CH3CH2OH> CICH2COOH > BrCH2COOH b. FCH2COOH > CH3COOH > F2CHCOOH oc. FCH2COOH > CH3COOH > CH3OH d. CH3COOH > CICH2COOH > CH3OH What is the correct assignment of the names of the following substituted benzenes? PhẩCEN Ph- Ph- 2 NH 3 OH a. l = benzonitrile; 2 = benzamide; 3 = benzoic acid b. 1...
WIN Sodium elle 2.ethoxy-1-methylcyclopentanol. base Base-catalyzed: The nucleophil attacks the less substituted can which is less hindered. 0 0-CH.CH OHH CH, OCH,CH, CH, (H (b) Under acidic conditions of the protonated epoxide. T conditions, the alcohol attacks the more electrophilic tertiary carbon atom tonated epoxide. The product is (E)-2-ethoxy-2-methylcyclopentanol. CH, OH 0 Co+ CH, H CH,CH,-0-H H CH.CH PROBLEM 24-27 Predict the major products of the following reactions, including stereochemistry where appropriate. (a) 2,2-dimethyloxirane + H/ H (oxygen-labeled water) by...
Which of the following structures is most stable? 2) How many stereoisomers does the molecule below have? (СН), С+ снен снаси сна OH CH₃ br. a) 3 6) 4 c) 6 d) 8 e 9 3) Which of the following molecules below are chiral? 0) to A Boh A MOH HOS DBr e) 1, 2 and 3 a) Only 1 b) 1 and 3 c) 2 and 3 d) 1 and 3 What is the relationship between the following two...
Please answer all questions.
The answer to question #2 is incorrect.
2 1 attempts left Check my work Which of the following amines can be used to resolve a racemic mixture of amino acids? Select all that apply. 0.5 points NH2 HIH eBook Ho Print NH2 References Be sure to answer all parts. The structure of the amino acid sequence Gly-His-Leu is shown below. Select the letters that correspond to the N-terminal(s), the C-terminal(s), and amide bond(s). (CH3)2CHCH2 0.5 points...
A. two B.four 15. Which one of the following compounds has highest boiling point? 1. CH3CH2CH3 II. CH3CH2OH III. CH3OCH3 C. six D. eight AI B. II CINI 16. What occurs when an optically active alcohol reacts with HBr to give an alkyl halide? A. complete inversion of configuration takes place at the chirality center B. incomplete and varying inversion of configuration takes place at the chirality center C. the chirality center retains its configuration D. the molecule loses its...
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250 Chapter 9 Chapter 9 Practice Test Which of the following reagents is the best one to use in order to wing reagents is the best one to use in order to convert methyl alcohol into methy bromide? 2. Br HBr Br NaBr Br* a. what would be the major product obtained from the reaction of the epoxide shown below containing 0.1 M HCI? CH2CH; CH CH3 b. What would be the major product obtained from...
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