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5. 10points. Determine which of substitution or elimination mechanism works best in order to form the...
5. 10points. Determine which of substitution or elimination mechanism works best in order to form the major product...
5. 10points. Determine which of substitution or elimination mechanism works best in order to form the major product of the following reaction? (hint: draw chair conformation for the molecule) NOCH.CH CH.CH OH HC CH
PARTH 420points. Explain the following resulting posible mechanisms CH 5. 10points. Determine which is limination mechanism...
PARTH 420points. Explain the following resulting posible mechanisms CH 5. 10points. Determine which is limination mechanism works best in order to form the major prodext of the following action (hint: draw chair cofomation for the molecule) HyCCM
Your Turn Which Mechanism is it? 5. In each of the problems below, consider the E1...
Your Turn Which Mechanism is it? 5. In each of the problems below, consider the E1 or E2 reaction occurs then show the mechanism and product or products. Label major and minor products where applicable. a. Reaction of 1,1-bromomethylcyclohexane and sodium ethoxide in ethanol CH, OH сн. b. Reaction of (1R 2R) 1-bromo-2-methylcyclohexane and sodium ethoxide in ethanol. HINT: You should draw the ring in a chair conformation first. CHE 90 -CH, CH,CH,OH C. Reaction of (15,2R) 1-bromo-2-methylcyclohexane and sodium...
For each of the following reactions, determine which ELIMINATION mechanism (E1 or 2) will occur. Alkyl...
For each of the following reactions, determine which ELIMINATION mechanism (E1 or 2) will occur. Alkyl Halide Substitution: Base Strength: Mechanism Type: 2° 3° Methyl Strong E1 1° Weak E2 Draw the mechanism that leads to ALL products for the reaction. Finally, underline the major product of the elimination reaction: NaOCH Challenge Problems: Synthesis: Predicted Ability: Good Average Poor Actual Ability: Good Average Poor Propose a synthesis from the starting material to obtain the indicated goal molecule. Note that any...
For each of the following reactions, determine which ELIMINATION mechanism (E1 or E2) will occur. Alkyl...
For each of the following reactions, determine which ELIMINATION mechanism (E1 or E2) will occur. Alkyl Halide Substitution: Methyl 1° 2° 3° Base Strength: Strong Weak Mechanism Type: E1 E2 Draw the mechanism that leads to ALL products for the reaction. Finally, underline the major product of the elimination reaction: H3C OH H2C H2C1 Br CHE
25. Which two reactions will never go through an E1 or Se 1 mechanism? Why not?...
25. Which two reactions will never go through an E1 or Se 1 mechanism? Why not? NaOCH V ICH,CH, OH CH,OH X Hyo 26. Substitution and elimination reactions always compete with each other. For each reaction below draw the probable substitution and elimination products, considering if a 1" or 2" order mechanism is likely. Then identify the major product 27. Draw the major organic product, then the curved arrow mechanism for each reaction, considering whether the major pathway should be...
Challenge CH 235R F 2019 Week 11 Problem #2 1. Predicting Major and Minor elimination products...
Challenge CH 235R F 2019 Week 11 Problem #2 1. Predicting Major and Minor elimination products For each of the following alkenes, draw all possible elimination products for the following molecules, ignoring the mechanism. Indicate the major alkene product. noted II. E2 Eliminations on substituted cyclohexane halides Consider the two isomeric compounds below. a) Draw each in a chair conformation, b) Show the mechanism and final alkene product(s) that form from an E2 reaction with CH,O/CH,OH. c) If more than...
5. In each of the problems below, consider the E1 or E2 reaction occurs then show...
5. In each of the problems below, consider the E1 or E2 reaction occurs then show the mechanism and product or products. Label major and minor products where applicable. a. Reaction of 1,1-bromomethylcyclohexane and sodium ethoxide in ethanol Br CH, OH b. Reaction of (1R 2R) 1-bromo-2-methylcyclohexane and sodium ethoxide in ethanol. HINT: You should draw the ring in a chair conformation first. CHE + 0 *lller Сн, CH,CH-OH C. Reaction of (15,2R) 1-bromo-2-methylcyclohexane and sodium ethoxide in ethanol. HINT:...
Some mechanism questions – another look at substitution and elimination mechanisms. 2. Some mechanism questions -...
Some mechanism questions – another look at substitution and
elimination mechanisms.
2. Some mechanism questions - another look at substitution and elimination mechanisms. Cyclohexanol is treated with hydrochloric acid. A mixture of three products form OH HCI Cl i. Which product(s) is (are) the result of s ubstitution? ii. Of the products A and B which should have a higher yield? iii. The mechanism for all three products has the same step: the formation of a carbocation. Draw the carbocation...
7 the following substitution reaction? Which is the major product of the follow CHOCHOH NaBr ?...
7 the following substitution reaction? Which is the major product of the follow CHOCHOH NaBr ? A) CH₂ CH₂ Br B) CH CH. Na c) CH₂-E-H D) All of the Above E) None of the Above of the following substitution reaction? CHE is the major product of the following substitut CH₂CH=CH-CH2 HBr ? CHz CÓ CH2=CH-CH3 OH A) CH₂CH=CH-CH3 B) CH3C-CH₂-CH3 D) None of the Above ? Which is the major product of the following reaction? PBra ? CHCH OH...
5. 10points. Determine which of substitution or elimination mechanism works best in order to form the major product of the following reaction? (hint: draw chair conformation for the molecule) NOCH.CH CH.CH OH HC CH
PARTH 420points. Explain the following resulting posible mechanisms CH 5. 10points. Determine which is limination mechanism works best in order to form the major prodext of the following action (hint: draw chair cofomation for the molecule) HyCCM
Your Turn Which Mechanism is it? 5. In each of the problems below, consider the E1 or E2 reaction occurs then show the mechanism and product or products. Label major and minor products where applicable. a. Reaction of 1,1-bromomethylcyclohexane and sodium ethoxide in ethanol CH, OH сн. b. Reaction of (1R 2R) 1-bromo-2-methylcyclohexane and sodium ethoxide in ethanol. HINT: You should draw the ring in a chair conformation first. CHE 90 -CH, CH,CH,OH C. Reaction of (15,2R) 1-bromo-2-methylcyclohexane and sodium...
For each of the following reactions, determine which ELIMINATION mechanism (E1 or 2) will occur. Alkyl Halide Substitution: Base Strength: Mechanism Type: 2° 3° Methyl Strong E1 1° Weak E2 Draw the mechanism that leads to ALL products for the reaction. Finally, underline the major product of the elimination reaction: NaOCH Challenge Problems: Synthesis: Predicted Ability: Good Average Poor Actual Ability: Good Average Poor Propose a synthesis from the starting material to obtain the indicated goal molecule. Note that any...
For each of the following reactions, determine which ELIMINATION mechanism (E1 or E2) will occur. Alkyl Halide Substitution: Methyl 1° 2° 3° Base Strength: Strong Weak Mechanism Type: E1 E2 Draw the mechanism that leads to ALL products for the reaction. Finally, underline the major product of the elimination reaction: H3C OH H2C H2C1 Br CHE
25. Which two reactions will never go through an E1 or Se 1 mechanism? Why not? NaOCH V ICH,CH, OH CH,OH X Hyo 26. Substitution and elimination reactions always compete with each other. For each reaction below draw the probable substitution and elimination products, considering if a 1" or 2" order mechanism is likely. Then identify the major product 27. Draw the major organic product, then the curved arrow mechanism for each reaction, considering whether the major pathway should be...
Challenge CH 235R F 2019 Week 11 Problem #2 1. Predicting Major and Minor elimination products For each of the following alkenes, draw all possible elimination products for the following molecules, ignoring the mechanism. Indicate the major alkene product. noted II. E2 Eliminations on substituted cyclohexane halides Consider the two isomeric compounds below. a) Draw each in a chair conformation, b) Show the mechanism and final alkene product(s) that form from an E2 reaction with CH,O/CH,OH. c) If more than...
5. In each of the problems below, consider the E1 or E2 reaction occurs then show the mechanism and product or products. Label major and minor products where applicable. a. Reaction of 1,1-bromomethylcyclohexane and sodium ethoxide in ethanol Br CH, OH b. Reaction of (1R 2R) 1-bromo-2-methylcyclohexane and sodium ethoxide in ethanol. HINT: You should draw the ring in a chair conformation first. CHE + 0 *lller Сн, CH,CH-OH C. Reaction of (15,2R) 1-bromo-2-methylcyclohexane and sodium ethoxide in ethanol. HINT:...
Some mechanism questions – another look at substitution and
elimination mechanisms.
2. Some mechanism questions - another look at substitution and elimination mechanisms. Cyclohexanol is treated with hydrochloric acid. A mixture of three products form OH HCI Cl i. Which product(s) is (are) the result of s ubstitution? ii. Of the products A and B which should have a higher yield? iii. The mechanism for all three products has the same step: the formation of a carbocation. Draw the carbocation...
7 the following substitution reaction? Which is the major product of the follow CHOCHOH NaBr ? A) CH₂ CH₂ Br B) CH CH. Na c) CH₂-E-H D) All of the Above E) None of the Above of the following substitution reaction? CHE is the major product of the following substitut CH₂CH=CH-CH2 HBr ? CHz CÓ CH2=CH-CH3 OH A) CH₂CH=CH-CH3 B) CH3C-CH₂-CH3 D) None of the Above ? Which is the major product of the following reaction? PBra ? CHCH OH...
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