Question

10) Identify the reagent(s) that would bring about the following reaction: CH3CH2CH2COCl ? CH3CH2CH2CHO a) H2/Ni b) Li/liq. NH3 c) LiAlH[OC(CH3)3]3, ether d) NaBH4, CH3OH e) LiAlH4, ether 11) LiAlH4 (LAH) cannot be used to convert carboxylic acids to the corresponding aldehydes because: a) LAH is not sufficiently reactive. b) RCOOH is converted into RCOOLi. c) RCOOH is reduced to RCH2OH. d) RCOOH is reduced to RCH3. e) RCOOH is converted into R2C=O. 12) In which of the following reactions is the final product expected to be formed as a racemic mixture? a) C6H5MgBr + C6H5C(=O)H b) HCN + CH3C(=O)CH3 c) C6H5CHO + HCN d) CH3C(=O)H + xs CH3OH + HCl e) CH3CH(CH3)CH2CO2C2H5 + (i-Bu)2AlH

          10) Identify the reagent(s) that would bring about the following reaction:
CH3CH2CH2COCl ? CH3CH2CH2CHO
a) H2/Ni
b) Li/liq. NH3
c) LiAlH[OC(CH3)3]3, ether
d) NaBH4, CH3OH
e) LiAlH4, ether
11) LiAlH4 (LAH) cannot be used to convert carboxylic acids to the corresponding aldehydes because:
a) LAH is not sufficiently reactive.
b) RCOOH is converted into RCOOLi.
c) RCOOH is reduced to RCH2OH.
d) RCOOH is reduced to RCH3.
e) RCOOH is converted into R2C=O.
12) In which of the following reactions is the final product expected to be formed as a racemic mixture?
a) C6H5MgBr + C6H5C(=O)H
b) HCN + CH3C(=O)CH3
c) C6H5CHO + HCN
d) CH3C(=O)H + xs CH3OH + HCl
e) CH3CH(CH3)CH2CO2C2H5 + (i-Bu)2AlH

10) Identify the reagent(s) that would bring about the following reaction:
CH3CH2CH2COCl ? CH3CH2CH2CHO
a) H2/Ni
b) Li/liq. NH3
c) LiAlH[OC(CH3)3]3, ether
d) NaBH4, CH3OH
e) LiAlH4, ether
11) LiAlH4 (LAH) cannot be used to convert carboxylic acids to the corresponding aldehydes because:
a) LAH is not sufficiently reactive.
b) RCOOH is converted into RCOOLi.
c) RCOOH is reduced to RCH2OH.
d) RCOOH is reduced to RCH3.
e) RCOOH is converted into R2C=O.
12) In which of the following reactions is the final product expected to be formed as a racemic mixture?
a) C6H5MgBr + C6H5C(=O)H
b) HCN + CH3C(=O)CH3
c) C6H5CHO + HCN
d) CH3C(=O)H + xs CH3OH + HCl
e) CH3CH(CH3)CH2CO2C2H5 + (i-Bu)2AlH

Added by Oscar C.

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