H. A

Propose an efficient synthesis for the given transformation. This transformation 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 more than one correct solution, provide just one answer. A B E 1) &: 2) 1)A :2) Mg H2, Lindlar's cat. NaH F G H. J 1) MeMgBr; 2) H30* Na, NH3 (1) МСРВА 1) EtMgBr; 2) HBr (xs), heat (RCO3H) H3O+ K L M N dilute H2SÓ4 SOCI2, pyridine 1) BH3-THF; 2) H2O2, NaOH DMP or PCC EtBr

what reagents would it be?

Propose an efficient synthesis for the given transformation. This transformation 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 more than one correct solution, provide just one answer. A B D E 1):2) 1) Å :2) ; 2) Mg H2, Lindlar's cat. NaH F G H 1) MeMgBr; 2) H30* Na, NH3 (I) МСРВА 1) EtMgBr; 2) HBr (xs), heat (RCO3H) K M N dilute H2SO4 DMP or PCC SOCI2, pyridine EtBr 1) BH3-THF; 2) H2O2. NaOH