Which two reagents below would you choose to synthesize 3-ethyl-2-phenyl-2-pentene using the Wittig procedure? (triphenylphosphine, solvents, and a base are provided)
Show the equation as well.
I. C6H5-CH=O
II. C6H5-COCH3
III. C6H5-COCH2CH3
IV. CH3CHBrCH2CH3
V. CH3CHBrCH2CH2CH3
VI. CH3CH2CHBrCH2CH3
a. I and V
b. II and IV
c. III and IV
d. II and VI