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What statement is TRUE about the mechanism for the reaction shown here? CH;(CH)2CO,CH CH;(CH)2CO,CH „CO.CH NaOH...
What statement is TRUE about the mechanism for the reaction shown here? CH(CH) COACH CHỊ(CH3CO,CH NaOH...
What statement is TRUE about the mechanism for the reaction shown here? CH(CH) COACH CHỊ(CH3CO,CH NaOH excess heat CH,(CH2)2CO CHỊ Water attacks the carbonyl carbon to form a tetrahedral intermediate The first step of the reaction involves protonation of the ester carbonyl oxygen. One of the products formed is CH3(CH2)2CO Na. Water deprotonates the alpha carbon.
What statement is TRUE about the mechanism for the reaction shown here? CH(CH2)2CO CH -COẠCH NaOH...
What statement is TRUE about the mechanism for the reaction shown here? CH(CH2)2CO CH -COẠCH NaOH CH3(CH)1200CH excess heat CH(CH3COACH Water attacks the carbonyl carbon to form a tetrahedral intermediate. The first step of the reaction involves protonation of the ester carbonyl oxygen. One of the products formed is glycerol. The hydroxide deprotonates the alpha carbon. Which bases among the following is/are used for irreversible enolate formation of acetaldehyde? NaH NaOMe II LDA III NaNH2 IV NaOH y II and...
What statement is TRUE about the mechanism for the reaction shown here? CHỊ(CH4)2COẠCH, CH,(CHỊ) CO,CH 2,...
What statement is TRUE about the mechanism for the reaction shown here? CHỊ(CH4)2COẠCH, CH,(CHỊ) CO,CH 2, CO,CH NAOH excess heat CHỊ(CH) CÓ CH, Water attacks the carbonyl carbon to form a tetrahedral intermediate. The first step of the reaction involves protonation of the ester carbonyl oxygen. One of the products formed is CH3(CH2)2CO2Na. Water deprotonates the alpha carbon.
What product is expected from the tollowmg reaction но 1. LiAH cther 2. Но Оно ОН...
What product is expected from the tollowmg reaction но 1. LiAH cther 2. Но Оно ОН ОН ОН но ОН What statement is TRUE about the mechanism for the reaction shown here? CH,(CH2)2CO,CH CH3(CH)12CO,CH „Coch! NaOH excess heat CH3(CH)2CO,CH, Water attacks the carbonyl carbon to form a tetrahedral intermediate. The first step of the reaction involves protonation of the ester carbonyl oxygen. One of the products formed is glycerol. The hydroxide deprotonates the alpha carbon.
What is the IUPAC name of the given molecule? OH Br 1-bromo-2-ethyl-2-hydroxy-3-methylpentanoic acid 2-ethyl-3-methylpentan-2-ol-1-carboxyl bromide 2-ethyl-3-methyl-2-ol-pentanoyl...
What is the IUPAC name of the given molecule? OH Br 1-bromo-2-ethyl-2-hydroxy-3-methylpentanoic acid 2-ethyl-3-methylpentan-2-ol-1-carboxyl bromide 2-ethyl-3-methyl-2-ol-pentanoyl bromide O2-ethyl-2-hydroxy-3-methylpentanoyl bromide What statement is TRUE about the mechanism for the reaction shown here? CH,(CH)2CO,CH, NaOH CH3(CH12COCH excess heat CH3(CH)2CO,CH2 Water attacks the carbonyl carbon to form a tetrahedral intermediate. The first step of the reaction involves protonation of the ester carbonyl oxygen. One of the products formed is glycerol. The hydroxide deprotonates the alpha carbon. Which bases among the following is/are used...
Choose the correct starting materials for the following Diels-Alder product: A CHO CHO CHO CHO CHO...
Choose the correct starting materials for the following Diels-Alder product: A CHO CHO CHO CHO CHO Doc CHO CHO CHO CHO 2.1 CHO Question 10(4 points) Which one of these compounds is insoluble in water, but soluble in both NaHCO3(aq) and NaOH(aq)? Ophenol O octanal O propanoic acid Op-methylbenzoic acid The best way to synthesize the following amine is: NH 2 H, N 1. NBS, bv 2. NaNH NHI O 1. NACN 2. LAIH 3. H,0 1. H.00 2. ex...
Which of the following statement is correct about the mechanism of hemiacetal and acetal formation? A....
Which of the following statement is correct about the mechanism of hemiacetal and acetal formation? A. In the hemiacetal formation mechanism, the oxygen on the alcohol uses its lone pair to "attack the carbonyl carbon before the protonation of the carbonyl oxygen B. The carbocation formation is not favored during the hemiacetal formation mechanism, this is why hemiacetal are generally unstable and very reactive C. In the acetal formation mechanism, hydrolysis of water to the hemiacetal carbon center occurs as...
If an ester labeled in the carbonyl oxygen with 18O is reacted with aqueous NaOH, what...
If an ester labeled in the carbonyl oxygen with 18O is reacted with aqueous NaOH, what would be the result? Hint 1. How to reason this out In light of the addition-elimination mechanism, consider the fate of the tetrahedral intermediates formed in the reaction. ANSWER: Recovered ester would have less of the label than at the beginning of the reaction. The alcohol from the hydrolysis would contain the 18O label. Recovered ester would now have the 18O in the alkoxy...
5) In the "reverse" of esterification, esters can be hydrolyzed with aqueous NaOH (as shown below)....
5) In the "reverse" of esterification, esters can be hydrolyzed with aqueous NaOH (as shown below). The factors that influence the rate of ester hydrolysis are similar to those that affect the rate of esterification described above in problem #4. The first step in this mechanism is nucleophilic attack of hydroxide on the carbonyl carbon for form a tetrahedral intermediate, followed by loss of the alcohol. OH/H20 OH/H, 0 0 0 ROH + R'OH - ROR too a. Which one...
СО cat. H + NH2CH3 + H2CO2C CO2CH3 CO CHE Cocaine has been prepared by a...
СО cat. H + NH2CH3 + H2CO2C CO2CH3 CO CHE Cocaine has been prepared by a sequence beginning with a Mannich reaction between dimethyl acetonedicarboxylate, methylamine, and butanedial. The mechanism involves the following steps: 1. Following initial protonation of the carbonyl oxygen, nucleophilic attack by the amine forms carbinolamine 1; 2. Proton transfer and elimination of water forms iminium ion 2; he enol form of the dicarboxylate ester attacks the iminium ion to form adduct 3; 4. Adduct 3 tautomerizes...
What statement is TRUE about the mechanism for the reaction shown here? CH(CH) COACH CHỊ(CH3CO,CH NaOH excess heat CH,(CH2)2CO CHỊ Water attacks the carbonyl carbon to form a tetrahedral intermediate The first step of the reaction involves protonation of the ester carbonyl oxygen. One of the products formed is CH3(CH2)2CO Na. Water deprotonates the alpha carbon.
What statement is TRUE about the mechanism for the reaction shown here? CH(CH2)2CO CH -COẠCH NaOH CH3(CH)1200CH excess heat CH(CH3COACH Water attacks the carbonyl carbon to form a tetrahedral intermediate. The first step of the reaction involves protonation of the ester carbonyl oxygen. One of the products formed is glycerol. The hydroxide deprotonates the alpha carbon. Which bases among the following is/are used for irreversible enolate formation of acetaldehyde? NaH NaOMe II LDA III NaNH2 IV NaOH y II and...
What statement is TRUE about the mechanism for the reaction shown here? CHỊ(CH4)2COẠCH, CH,(CHỊ) CO,CH 2, CO,CH NAOH excess heat CHỊ(CH) CÓ CH, Water attacks the carbonyl carbon to form a tetrahedral intermediate. The first step of the reaction involves protonation of the ester carbonyl oxygen. One of the products formed is CH3(CH2)2CO2Na. Water deprotonates the alpha carbon.
What product is expected from the tollowmg reaction но 1. LiAH cther 2. Но Оно ОН ОН ОН но ОН What statement is TRUE about the mechanism for the reaction shown here? CH,(CH2)2CO,CH CH3(CH)12CO,CH „Coch! NaOH excess heat CH3(CH)2CO,CH, Water attacks the carbonyl carbon to form a tetrahedral intermediate. The first step of the reaction involves protonation of the ester carbonyl oxygen. One of the products formed is glycerol. The hydroxide deprotonates the alpha carbon.
What is the IUPAC name of the given molecule? OH Br 1-bromo-2-ethyl-2-hydroxy-3-methylpentanoic acid 2-ethyl-3-methylpentan-2-ol-1-carboxyl bromide 2-ethyl-3-methyl-2-ol-pentanoyl bromide O2-ethyl-2-hydroxy-3-methylpentanoyl bromide What statement is TRUE about the mechanism for the reaction shown here? CH,(CH)2CO,CH, NaOH CH3(CH12COCH excess heat CH3(CH)2CO,CH2 Water attacks the carbonyl carbon to form a tetrahedral intermediate. The first step of the reaction involves protonation of the ester carbonyl oxygen. One of the products formed is glycerol. The hydroxide deprotonates the alpha carbon. Which bases among the following is/are used...
Choose the correct starting materials for the following Diels-Alder product: A CHO CHO CHO CHO CHO Doc CHO CHO CHO CHO 2.1 CHO Question 10(4 points) Which one of these compounds is insoluble in water, but soluble in both NaHCO3(aq) and NaOH(aq)? Ophenol O octanal O propanoic acid Op-methylbenzoic acid The best way to synthesize the following amine is: NH 2 H, N 1. NBS, bv 2. NaNH NHI O 1. NACN 2. LAIH 3. H,0 1. H.00 2. ex...
Which of the following statement is correct about the mechanism of hemiacetal and acetal formation? A. In the hemiacetal formation mechanism, the oxygen on the alcohol uses its lone pair to "attack the carbonyl carbon before the protonation of the carbonyl oxygen B. The carbocation formation is not favored during the hemiacetal formation mechanism, this is why hemiacetal are generally unstable and very reactive C. In the acetal formation mechanism, hydrolysis of water to the hemiacetal carbon center occurs as...
5) In the "reverse" of esterification, esters can be hydrolyzed with aqueous NaOH (as shown below). The factors that influence the rate of ester hydrolysis are similar to those that affect the rate of esterification described above in problem #4. The first step in this mechanism is nucleophilic attack of hydroxide on the carbonyl carbon for form a tetrahedral intermediate, followed by loss of the alcohol. OH/H20 OH/H, 0 0 0 ROH + R'OH - ROR too a. Which one...
СО cat. H + NH2CH3 + H2CO2C CO2CH3 CO CHE Cocaine has been prepared by a sequence beginning with a Mannich reaction between dimethyl acetonedicarboxylate, methylamine, and butanedial. The mechanism involves the following steps: 1. Following initial protonation of the carbonyl oxygen, nucleophilic attack by the amine forms carbinolamine 1; 2. Proton transfer and elimination of water forms iminium ion 2; he enol form of the dicarboxylate ester attacks the iminium ion to form adduct 3; 4. Adduct 3 tautomerizes...
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