Homework Answers
b) A rotary evaporator (rotavap) is a an instrument or device that are generally used used chemical laboratories for the efficient and lenient removal of solvents from a samples by evaporation
d) A different way to do this is to add sodium or potassium hydride NaH or KH). This has the same effect as adding sodium or potassium metal – forms the alkoxide and also H2 so that it will not being strongly reducing, a potential concern if we’re dealing with a complicated starting material that is easily reduced
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4. a) In the red uctive amination reaction why is the NaBH4 only added 15 minutes...
4. a) In the reductive amination reaction why is the NaBH, only added 15 minutes after...
4. a) In the reductive amination reaction why is the NaBH, only added 15 minutes after the amine and the aldehyde have been mixed, and not right away? b) What is a rotary evaporator (Rotovap) used for? c) In the Williamson Ether Synthesis, why did we use a reflux assembly and not just boil the reactants in a beaker or flask? d) Would you expect the melting point of a crude product to be higher or lower than the melting...
IS 3. ChboCKs 2 CH2CH2Br+ 2 Mg+ С-нвосн. CeHsCCH2CH Сн,CH, 109 g/mole 1.47 g/mL 24.3 g/mole...
IS 3. ChboCKs 2 CH2CH2Br+ 2 Mg+ С-нвосн. CeHsCCH2CH Сн,CH, 109 g/mole 1.47 g/mL 24.3 g/mole 136 g/mole 1.08 g/mL 164 g/mole If 10.0 mL of bromoethane react with 5.0 g Mg. then with 10.0 g of methylbenzoate, and if 9.0 g of 3-phenylpentanol are formed, what is the percent yield? Show your work 4. a) In the reductive amination reaction why is the NaBH4 only added 15 minutes after the amine and the aldehyde have been mixed, and not...
2 CH,CHBr + 2 Me + C.HBOCH, OH C.H.CCHCH CH2CH3 109 g/mole 1.47 g/mL 24.3 g/mole...
2 CH,CHBr + 2 Me + C.HBOCH, OH C.H.CCHCH CH2CH3 109 g/mole 1.47 g/mL 24.3 g/mole 164 g/mole 136 g/mole 1.08 g/ml If 10.0 mL of bromoethane react with 5.0 g Mg, then with 10.0 g of methylbenzoate, and if 9.0 g of 3-phenylpentanol are formed, what is the percent yield? Show your work. 4. a) In the reductive amination reaction why is the NaBH, only added 15 minutes after the amine and the aldehyde have been mixed, and not...
он Cam BacHs CeHsCCH2CH СHCH IS 3. 2 CH CH Br+ 2 Mg+ 164 g/mole 136...
он Cam BacHs CeHsCCH2CH СHCH IS 3. 2 CH CH Br+ 2 Mg+ 164 g/mole 136 g/mole 1.08 g/mL 109 g/mole 1.47 g/mL 24.3 g/mole If 10.0 mL of bromoethane react with 5.0 g Mg, then with 10.0 g of methylbenzoate, and if 9.0 g of 3-phenylpentanol are formed, what is the percent yield? Show your work HO Ho 4. a) In the reductive amination reaction why is the NABH4 only added 15 minutes after the amine and the aldehyde...
please help me answer those three questions according to the oother pictures į CH, CH3 1....
please help me answer those three questions according to the
oother pictures
į CH, CH3 1. NaOMe in MeOH / EtOH, reflux 2. Ethyl lodide, reflux N bolo OH Acetaminophen phenacetini erot!) DAN Procedure: Measure and dispense 0.6 ml of a 4.4 M solution of sodium methoxide in methanol and im of ethanol into a 5 mL reaction vial. Add 215 mmol of acetaminophen (-0.378 8). Set up for reflux in the Tume hood and bring reaction to reflux for...
please answer the prelab excercise:) I tried doing it but I did not get very far Experiment 7: Grignard Reactio...
please answer the prelab excercise:) I tried doing it but I did not
get very far
Experiment 7: Grignard Reaction. Introduction Discovered by French chemist Victor Grignard, the reaction that now bears his name is an example of the preparation of an organometallic reagent. In this lab, phenylmagnesium bromide is the Grignard of interest, and it will be added to an aldehyde to produce an alcohol. Lab Objectives 1. To study organometallic reagents in general. benzophenone. 2. To prepare phenylmagnesium...
If you were to run this reaction on a 0.5 g acetaminophen, how much powdered potassium...
If you were to run this reaction on a 0.5 g acetaminophen, how
much powdered potassium carbonate would you use ? Show your
work
Alcohols and Ethers 185 14.3 THE WILLIAMSON ETHER SYNTHESIS: PREPARATION OF PHENACETIN FROM ACETAMINOPHEN One of the most common methods used to prepare ether Williamson ether synthesis. In this reaction, an alkoxide anion (RO) acts as a nucleophile in an S, 2 process, displacing a leaving group (X) from an electrophile (R-X). R-20 . RY ROR...
Hi! Can you please answer questions a and b for my organic lab report :) The...
Hi! Can you please answer questions a and b for my organic lab
report :) The pictures below the questions is my lab procedure.
Thank you
6. Analysis Questions: a) This lab utilized a new technique called reflux, and the use of a condenser tube while heating the reaction. What is the purpose of the condenser? Why not just heat the reaction in a closed vessel instead? b) A student misread the instructions and first refluxed the sodium methoxide in...
Grignard Reaction with a Ketone: Triphenylmethanol Introduction: The purpose of this lab is to prepare phenylmagnesium...
Grignard Reaction with a Ketone: Triphenylmethanol Introduction: The purpose of this lab is to prepare phenylmagnesium bromide, a Grignard reagent, and react it with benzophenone to give triphenylmethanol. Grignard reagents are very reactive and must be synthesized in an environment free of water or any other source of potential proton donor. Once made, the Grignard reagent will do a nucleophilic attack on the carbonyl carbon of the ketone, benzophenone. The result is an alkoxide that is then protonated to give...
I only need help with the PRE-LAB section. I included the recorded information. Calculate the mass...
I only need help with the PRE-LAB section. I included the
recorded information. Calculate the mass in gram of Sodium
hydroxide (NaOH), 2-naphthol, and 1-bromobutane (n-BuBr).
EXPERIMENT 9 SYNTHESIS OF 2-BUTOXYNAPHTHALENE OH 1. NaOH, ETOH .LT 2. n-BuBr DISCUSSION: Nucleophilic substitution reaction is a frequently used method to convert one functional group into another. A nucleophile is mixed with an electrophile and the nucleophile replaces the leaving group to produce a new compound. In this experiment, a weak nucleophile (2-naphthol)...
4. a) In the reductive amination reaction why is the NaBH, only added 15 minutes after the amine and the aldehyde have been mixed, and not right away? b) What is a rotary evaporator (Rotovap) used for? c) In the Williamson Ether Synthesis, why did we use a reflux assembly and not just boil the reactants in a beaker or flask? d) Would you expect the melting point of a crude product to be higher or lower than the melting...
IS 3. ChboCKs 2 CH2CH2Br+ 2 Mg+ С-нвосн. CeHsCCH2CH Сн,CH, 109 g/mole 1.47 g/mL 24.3 g/mole 136 g/mole 1.08 g/mL 164 g/mole If 10.0 mL of bromoethane react with 5.0 g Mg. then with 10.0 g of methylbenzoate, and if 9.0 g of 3-phenylpentanol are formed, what is the percent yield? Show your work 4. a) In the reductive amination reaction why is the NaBH4 only added 15 minutes after the amine and the aldehyde have been mixed, and not...
2 CH,CHBr + 2 Me + C.HBOCH, OH C.H.CCHCH CH2CH3 109 g/mole 1.47 g/mL 24.3 g/mole 164 g/mole 136 g/mole 1.08 g/ml If 10.0 mL of bromoethane react with 5.0 g Mg, then with 10.0 g of methylbenzoate, and if 9.0 g of 3-phenylpentanol are formed, what is the percent yield? Show your work. 4. a) In the reductive amination reaction why is the NaBH, only added 15 minutes after the amine and the aldehyde have been mixed, and not...
он Cam BacHs CeHsCCH2CH СHCH IS 3. 2 CH CH Br+ 2 Mg+ 164 g/mole 136 g/mole 1.08 g/mL 109 g/mole 1.47 g/mL 24.3 g/mole If 10.0 mL of bromoethane react with 5.0 g Mg, then with 10.0 g of methylbenzoate, and if 9.0 g of 3-phenylpentanol are formed, what is the percent yield? Show your work HO Ho 4. a) In the reductive amination reaction why is the NABH4 only added 15 minutes after the amine and the aldehyde...
please help me answer those three questions according to the
oother pictures
į CH, CH3 1. NaOMe in MeOH / EtOH, reflux 2. Ethyl lodide, reflux N bolo OH Acetaminophen phenacetini erot!) DAN Procedure: Measure and dispense 0.6 ml of a 4.4 M solution of sodium methoxide in methanol and im of ethanol into a 5 mL reaction vial. Add 215 mmol of acetaminophen (-0.378 8). Set up for reflux in the Tume hood and bring reaction to reflux for...
please answer the prelab excercise:) I tried doing it but I did not
get very far
Experiment 7: Grignard Reaction. Introduction Discovered by French chemist Victor Grignard, the reaction that now bears his name is an example of the preparation of an organometallic reagent. In this lab, phenylmagnesium bromide is the Grignard of interest, and it will be added to an aldehyde to produce an alcohol. Lab Objectives 1. To study organometallic reagents in general. benzophenone. 2. To prepare phenylmagnesium...
If you were to run this reaction on a 0.5 g acetaminophen, how
much powdered potassium carbonate would you use ? Show your
work
Alcohols and Ethers 185 14.3 THE WILLIAMSON ETHER SYNTHESIS: PREPARATION OF PHENACETIN FROM ACETAMINOPHEN One of the most common methods used to prepare ether Williamson ether synthesis. In this reaction, an alkoxide anion (RO) acts as a nucleophile in an S, 2 process, displacing a leaving group (X) from an electrophile (R-X). R-20 . RY ROR...
Hi! Can you please answer questions a and b for my organic lab
report :) The pictures below the questions is my lab procedure.
Thank you
6. Analysis Questions: a) This lab utilized a new technique called reflux, and the use of a condenser tube while heating the reaction. What is the purpose of the condenser? Why not just heat the reaction in a closed vessel instead? b) A student misread the instructions and first refluxed the sodium methoxide in...
I only need help with the PRE-LAB section. I included the
recorded information. Calculate the mass in gram of Sodium
hydroxide (NaOH), 2-naphthol, and 1-bromobutane (n-BuBr).
EXPERIMENT 9 SYNTHESIS OF 2-BUTOXYNAPHTHALENE OH 1. NaOH, ETOH .LT 2. n-BuBr DISCUSSION: Nucleophilic substitution reaction is a frequently used method to convert one functional group into another. A nucleophile is mixed with an electrophile and the nucleophile replaces the leaving group to produce a new compound. In this experiment, a weak nucleophile (2-naphthol)...
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