Integrated Problem $12\mathrm{.}54$m Propose an efficient synthesis for the following transformation: The transformation above can be performed with some reagent or combination of the reagents listed below. Give the necessary reagent$($s$)$ in the correct order as a ctrinn nf lattare fusitha... $.........../$r$/$n Propose an efficient synthesis for the following transformation: The transformation above can be performed with some reagent or combination of the reagents listed below. $/$r$/$n Propose an efficient synthesis for the following transformation: The transformation ahove can ho norformod $...$ithPropose an efficient synthesis for the following transformation:

The transformation above can be performed with some reagent or combination of the reagents listed below. Give the

necessary reagent$($s$)$ in the correct order, as a string of letters $($without spaces or punctuation, such as "EBF"$).$ If there is mo

than one correct solution, provide just one answer.

A

t$-$BuOK

MeMgBr;$2$

E

$H_2,$ Lindlar's cat.

I

I

B

$N{a}_{2}C{r}_2{O}_7,H_{2}S{O}_4,H_{2}O$

G

TsCl$,$ py

K

C

D

NaOH

H

dilute $H_{2}S{O}_4$

$LiAl{H}_4$; $2)H_3{O}^{+}$

DMP or PCC

EtMgBr; $2)H_3{O}^{+}$

$B{H}_3*THF$; $2)H_2{O}_2,$NaOH