Homework Answers
a) gjb
Pentanoic acid is first converted to thionyl chloride with the help of SOCl2. It is then converted to amide with excess NH3. Then reduction is done using LiAlH4 to get pentylamime.
b) b
Reduction of pentanamide with a strong reducing agent like LiAlH4 gives pentylamime
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Choose reagents from the table for conversion of the following starting materials to pentylamine Choose the...
Choose reagents from the table for conversion of pentanoic acid to the following substances Choose the...
Choose reagents from the table for conversion of pentanoic acid to the following substances Choose the route with the fewest steps Use letters from the table to list reagents in the order used (first at the left). Example: ab Reagents e Br2/ NaOH, H2O 1. BH3/ THF 2. H20 b 1.LiAlH 2. H20 f Br2/ PBr3 j excess NH3 c 1. NaBH4 9 SOC2 k NaCN d H20, heat h PBr3 I NaN a) Butylamine b) Pentanamide SYSRO 0 7...
7. Choose your own adventure.Choose one of the starting materials below, then treat ti with three...
7. Choose your own adventure.Choose one of the starting materials below, then treat ti with three of the reagents listed, showing the expected product after each step. (9 pts) Starting materials Reagents [H+], H2O H+], H20 NaBH4, EtOH 1. LiAlH4 2. H3O+ CH2-PPh3 NaOH(aq), then H30+ SOCl2 DIBAL Br2, hv 1. BH3, THF, 2. H202, NaOH TMSCI, pyridine PBr3 1. NaH 2. CH3CH2Br PCC H2, Pd/C CH3CH2OH Starting material Product 1 Final product Product 2
он Choose from the following list of reagents: H2, Lindlar's catalyst PCC, CH2Cl2 1) Br2 2)...
он Choose from the following list of reagents: H2, Lindlar's catalyst PCC, CH2Cl2 1) Br2 2) xs NaNH2 3) H20 1) NaNH2 2) H20 1) BH3 THF 2) H202, NaOH 9 H2CrO4 1) Hg(OAc)2, H20 dilute H2S04 H202, NaOH MCPBA 2) NaBH4 Enter the correct letter for each step of the reaction in the boxes below. (Reagents cannot be used more than once.) Step A: Step B:
A student wants to synthesize propionitrile from ethanol. CH,CH,OH - CH,CH,CN Which of the following reagents...
A student wants to synthesize propionitrile from ethanol. CH,CH,OH - CH,CH,CN Which of the following reagents would work? (Select all that apply). 0 1. H30* 2. NaCN 1. HBr 2. NaCN 1. SoCl2, pyridine 2. NaCN 1. PBr3, pyridine 2. NaCN NaCN 0
In each reaction box, place the best reagent and conditions from the list below. OH a...
In each reaction box, place the best reagent and conditions from the list below. OH a 2) 3) H2S04, (conc.), heat NaH BH3/THF H2O2, NaOH, H2O SOCl2 Br2, H20 PBr3 03 NaOH HBr macmillan learning each reaction box, place the best reagent and conditions from the list below. 1) 2) OH 3) OH 4) H2O2, NaOH, H20 CH3COO- CH30- H30* BH3/THE H2SO4 (conc.) NaBH4 NaOH TsCl, pyridine (CH3)3C0-
2. Choose the reagents and reaction conditions required to accomplish each of the following transformations OH...
2. Choose the reagents and reaction conditions required to accomplish each of the following transformations OH Z-I OH a) NaOH, H2O, NH3 b) i. SOCl2 ii. NH3, iii. Br2 / NaOH, iv. H30+ c) NH3COCl, heat d) CH2N2, diethyl ether
In each reaction box, place the best reagent and conditions from the list below 1 LDA,...
In each reaction box, place the best reagent and conditions from the list below 1 LDA, THF 2) CH3CH2Br 3) 4) 5) 6) CrO3 NaBH4 NaCN CH3Br LiAlH4 Br2, H3Br2, NaOH CH3CN PBr3 KMnO4 Pyridine BH3, THF Br2, FeBr3 H2O
The correct order of reaction reagents to go from starting material to the desired product is:...
The correct order of reaction reagents to go from starting material to the desired product is: Reagents for the first reaction: Reagents for the second reaction: Reagents for the third reaction : Reagents for the fourth reaction : Who но OH HOT PPh3 1. R-Li 2. H30+ Но он K₂Cr₂O7 H2SO4 H20 RH н* 5 1. LiAlH4 PPh3 PPh3 H3O+ H2SO4 Heat 2. H20 RR HH 10 11 12 1. NaCN ROH RR RONa ROH NaOH R-NH2 2. H2O* H+...
Choose the reagents used in the following synthesis? -OH -OH ON HON A) 1. NaBH4-THF. 2....
Choose the reagents used in the following synthesis? -OH -OH ON HON A) 1. NaBH4-THF. 2. H30+ B) 1. Mg/ether 2. dry CO2. 3. H30+ C) 1. LiAlH4-THE 2. H30+ D) 1. Hot KMnO4.2. H30+ E) 1. LiAIH[O(CH3)313-THF 2. H30+
Select reagents from the table to show how you would carry out this transformation. If more...
Select reagents from the table to show how you would carry out
this transformation. If more than one route exists, use the one
that requires the fewest steps; in no case will more than 3 steps
be required.
Enter your selection as a series of letters for the reagents in the
order that you wish to use them, i.e. fca.
? CH2 COOH H₃C H3C a. Reagents HBr b. Mg, ether C. CO2, ether then H307 d. BH3, THF then...
Choose reagents from the table for conversion of pentanoic acid to the following substances Choose the route with the fewest steps Use letters from the table to list reagents in the order used (first at the left). Example: ab Reagents e Br2/ NaOH, H2O 1. BH3/ THF 2. H20 b 1.LiAlH 2. H20 f Br2/ PBr3 j excess NH3 c 1. NaBH4 9 SOC2 k NaCN d H20, heat h PBr3 I NaN a) Butylamine b) Pentanamide SYSRO 0 7...
7. Choose your own adventure.Choose one of the starting materials below, then treat ti with three of the reagents listed, showing the expected product after each step. (9 pts) Starting materials Reagents [H+], H2O H+], H20 NaBH4, EtOH 1. LiAlH4 2. H3O+ CH2-PPh3 NaOH(aq), then H30+ SOCl2 DIBAL Br2, hv 1. BH3, THF, 2. H202, NaOH TMSCI, pyridine PBr3 1. NaH 2. CH3CH2Br PCC H2, Pd/C CH3CH2OH Starting material Product 1 Final product Product 2
он Choose from the following list of reagents: H2, Lindlar's catalyst PCC, CH2Cl2 1) Br2 2) xs NaNH2 3) H20 1) NaNH2 2) H20 1) BH3 THF 2) H202, NaOH 9 H2CrO4 1) Hg(OAc)2, H20 dilute H2S04 H202, NaOH MCPBA 2) NaBH4 Enter the correct letter for each step of the reaction in the boxes below. (Reagents cannot be used more than once.) Step A: Step B:
A student wants to synthesize propionitrile from ethanol. CH,CH,OH - CH,CH,CN Which of the following reagents would work? (Select all that apply). 0 1. H30* 2. NaCN 1. HBr 2. NaCN 1. SoCl2, pyridine 2. NaCN 1. PBr3, pyridine 2. NaCN NaCN 0
In each reaction box, place the best reagent and conditions from the list below. OH a 2) 3) H2S04, (conc.), heat NaH BH3/THF H2O2, NaOH, H2O SOCl2 Br2, H20 PBr3 03 NaOH HBr macmillan learning each reaction box, place the best reagent and conditions from the list below. 1) 2) OH 3) OH 4) H2O2, NaOH, H20 CH3COO- CH30- H30* BH3/THE H2SO4 (conc.) NaBH4 NaOH TsCl, pyridine (CH3)3C0-
2. Choose the reagents and reaction conditions required to accomplish each of the following transformations OH Z-I OH a) NaOH, H2O, NH3 b) i. SOCl2 ii. NH3, iii. Br2 / NaOH, iv. H30+ c) NH3COCl, heat d) CH2N2, diethyl ether
In each reaction box, place the best reagent and conditions from the list below 1 LDA, THF 2) CH3CH2Br 3) 4) 5) 6) CrO3 NaBH4 NaCN CH3Br LiAlH4 Br2, H3Br2, NaOH CH3CN PBr3 KMnO4 Pyridine BH3, THF Br2, FeBr3 H2O
The correct order of reaction reagents to go from starting material to the desired product is: Reagents for the first reaction: Reagents for the second reaction: Reagents for the third reaction : Reagents for the fourth reaction : Who но OH HOT PPh3 1. R-Li 2. H30+ Но он K₂Cr₂O7 H2SO4 H20 RH н* 5 1. LiAlH4 PPh3 PPh3 H3O+ H2SO4 Heat 2. H20 RR HH 10 11 12 1. NaCN ROH RR RONa ROH NaOH R-NH2 2. H2O* H+...
Choose the reagents used in the following synthesis? -OH -OH ON HON A) 1. NaBH4-THF. 2. H30+ B) 1. Mg/ether 2. dry CO2. 3. H30+ C) 1. LiAlH4-THE 2. H30+ D) 1. Hot KMnO4.2. H30+ E) 1. LiAIH[O(CH3)313-THF 2. H30+
Select reagents from the table to show how you would carry out
this transformation. If more than one route exists, use the one
that requires the fewest steps; in no case will more than 3 steps
be required.
Enter your selection as a series of letters for the reagents in the
order that you wish to use them, i.e. fca.
? CH2 COOH H₃C H3C a. Reagents HBr b. Mg, ether C. CO2, ether then H307 d. BH3, THF then...
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