Propose an efficient synthesis for the following compound using an acetoacetic ester synthesis: The transformation above can be performed with some reagent or combination of the reagents listed below. Give the necessary reagents in the correct order, as a string of letters (without spaces or punctuation, such as "EBF"). If there is more than one correct solution, provide just one answer. A.
CH_(3)CH_(2)CH_(2)Br
B.
CH_(3)CH_(2)Br
C.
PhCH_(2)Br
D.
PhCH_(2)CH_(2)Br
E.
H_(3)O^(+)
, heat F. NaOEt