During a synthesis of (+)-coronafacic acid, a key component in the plant toxin coronatine, the following...
During a synthesis of (+)-coronafacic acid, a key component in the plant toxin coronatine, the following reaction was performed, in which a ketone was converted into an acetal. In this case, p-toluenesulfonic acid (p-TsOH) functions as an acid catalyst
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During a synthesis of (+)-coronafacic acid, a key component in
the plant toxin coronatine, the following...
The following sequence of reactions was performed during a synthesis of (+)-coronafacic acid, a key component...
The following sequence of reactions was performed during a synthesis of (+)-coronafacic acid, a key component in the plant toxin coronatine (J. Org. Chem. 2009, 74, 2433-2437).
Which best explains why an acetal can be used as a protecting group for carbonyls during...
Which best explains why an acetal can be used as a protecting group for carbonyls during a Grignard readion (A) The acetal is stable in acid. (B) The acetal prevents reaction of the carbonyl with a strong nucleophile. (C) The reaction is reversible and the acid helps to generate more product (D) To increase the electrophilic nature of the ketone since the Grignard is a weak nucleophile 0909 Select the reagents needed for the synthesis of pentyl butanoate by Fischer...
Propose a structure for the polymer formed by intermolecular reaction of salicylic acid during the synthesis of aspirin. Which is the stronger acid, aspirin or salicylic acid?
Propose a structure for the polymer formed by intermolecular reaction of salicylic acid during the synthesis of aspirin. Which is the stronger acid, aspirin or salicylic acid?
Nitric acid is a key industrial chemical, largely used to make fertilizers and explosives. The first...
Nitric acid is a key industrial chemical, largely used to make fertilizers and explosives. The first step in its synthesis is the oxidation of ammonia. In this reaction, gaseous ammonia reacts with dioxygen gas to produce nitrogen monoxide gas and water. Suppose a chemical engineer studying a new catalyst for the oxidation of ammonia reaction finds that 988 liters per second of dioxygen are consumed when the reaction is run at 188. "C and 0.56 atm. Calculate the rate at...
Nitric acid is a key industrial chemical, largely used to make fertilizers and explosives. The first...
Nitric acid is a key industrial chemical, largely used to make fertilizers and explosives. The first step in its synthesis is the oxidation of ammonia. In this reaction, gaseous ammonia reacts with dioxygen gas to produce nitrogen monoxide gas and water. Suppose a chemical engineer studying a new catalyst for the oxidation of ammonia reaction finds that 519. liters per second of dioxygen are consumed when the reaction is run at 175. C and 0.36 atm. Calculate the rate at...
QUESTION 5 Which of the following statements best describes the role NaOH plays in the synthesis...
QUESTION 5 Which of the following statements best describes the role NaOH plays in the synthesis of aspirin? None of these. It acts as a catalyst. It reacts with the acid. It makes the reaction exothermic. It helps to speed up the reaction. It helps to slow down the reaction.
1. Which of the following is true of the processes that occur during fatty acid synthesis?...
1. Which of the following is true of the processes that occur during fatty acid synthesis? a. The second step uses NADPH to form an alcohol. b. The forth step uses NADPH to reduce a C=C double bond, thus forming a saturated acyl molecule attached to the ACP. c. The third step removes a water molecule to form a C=C double bond d. All of these are true. e. An immediate product of the condensation reaction is a beta-ketoacyl group...
Please help! For the reaction in step 2, how do i find the theoretical yield of...
Please help! For the reaction
in step 2, how do i find the theoretical yield of the product for
this reaction? 0.07 moles of the reactant (ethyl acetoacetate
ethylene ketal) was used. What is that keto alcohol product
(circled) called? what is the molar mass of that circled product??
thank you!!
(TsOH) as catalyst. . Check your organic textbook for the mechanism- acid-catalvzed addition of alcohol to aldehydes or ketones to form acetals or ketals. The ketone carbonyl, significantly more...
Nitric acid is a key industrial chemical, largely used to make fertilizers and explosives. The first...
Nitric acid is a key industrial chemical, largely used to make fertilizers and explosives. The first step in its synthesis is the oxidation of ammonia. In this reaction, gaseous ammonia reacts with dioxygen gas to produce nitrogen monoxide gas and water. Suppose a chemical engineer studying a new catalyst for the oxidation of ammonia reaction finds that 900. liters per second of dioxygen are consumed when the reaction is run at 224. °C and 0.99 atm. Calculate the rate at...
Mechanism predicts that 4b should be formed. may be nepiu to 61 Several natural products have bee...
mechanism predicts that 4b should be formed. may be nepiu to 61 Several natural products have been isolated from the flowering plant Sarcostemme acidum, which has been used in folk medicine as a cough suppressant During efforts to make these compounds in the laboratory, it was discovered that one of the natural products is readily converted into another one of the natural products in a cyclization reaction that occurs upon treatment with a strong acid.10 A similar cyclization is shown...
The following sequence of reactions was performed during a synthesis of (+)-coronafacic acid, a key component in the plant toxin coronatine (J. Org. Chem. 2009, 74, 2433-2437).
Which best explains why an acetal can be used as a protecting group for carbonyls during a Grignard readion (A) The acetal is stable in acid. (B) The acetal prevents reaction of the carbonyl with a strong nucleophile. (C) The reaction is reversible and the acid helps to generate more product (D) To increase the electrophilic nature of the ketone since the Grignard is a weak nucleophile 0909 Select the reagents needed for the synthesis of pentyl butanoate by Fischer...
Nitric acid is a key industrial chemical, largely used to make fertilizers and explosives. The first step in its synthesis is the oxidation of ammonia. In this reaction, gaseous ammonia reacts with dioxygen gas to produce nitrogen monoxide gas and water. Suppose a chemical engineer studying a new catalyst for the oxidation of ammonia reaction finds that 988 liters per second of dioxygen are consumed when the reaction is run at 188. "C and 0.56 atm. Calculate the rate at...
Nitric acid is a key industrial chemical, largely used to make fertilizers and explosives. The first step in its synthesis is the oxidation of ammonia. In this reaction, gaseous ammonia reacts with dioxygen gas to produce nitrogen monoxide gas and water. Suppose a chemical engineer studying a new catalyst for the oxidation of ammonia reaction finds that 519. liters per second of dioxygen are consumed when the reaction is run at 175. C and 0.36 atm. Calculate the rate at...
QUESTION 5 Which of the following statements best describes the role NaOH plays in the synthesis of aspirin? None of these. It acts as a catalyst. It reacts with the acid. It makes the reaction exothermic. It helps to speed up the reaction. It helps to slow down the reaction.
Please help! For the reaction
in step 2, how do i find the theoretical yield of the product for
this reaction? 0.07 moles of the reactant (ethyl acetoacetate
ethylene ketal) was used. What is that keto alcohol product
(circled) called? what is the molar mass of that circled product??
thank you!!
(TsOH) as catalyst. . Check your organic textbook for the mechanism- acid-catalvzed addition of alcohol to aldehydes or ketones to form acetals or ketals. The ketone carbonyl, significantly more...
Nitric acid is a key industrial chemical, largely used to make fertilizers and explosives. The first step in its synthesis is the oxidation of ammonia. In this reaction, gaseous ammonia reacts with dioxygen gas to produce nitrogen monoxide gas and water. Suppose a chemical engineer studying a new catalyst for the oxidation of ammonia reaction finds that 900. liters per second of dioxygen are consumed when the reaction is run at 224. °C and 0.99 atm. Calculate the rate at...
mechanism predicts that 4b should be formed. may be nepiu to 61 Several natural products have been isolated from the flowering plant Sarcostemme acidum, which has been used in folk medicine as a cough suppressant During efforts to make these compounds in the laboratory, it was discovered that one of the natural products is readily converted into another one of the natural products in a cyclization reaction that occurs upon treatment with a strong acid.10 A similar cyclization is shown...
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