A. Propose an efficient synthesis for the following transformation: B. D. The synthesis above used bromoethane, but acetylene is the only allowed source of carbon atoms. Using the reagents given, identify a synthetic route for the production of bromoethane from acetylene. ? H- -H The transformation above can be performed with some combination of the reagents listed below. Give the necessary reagents in the correct order for each transformation, as a string of letters (without spaces or punctuation, such as "EBF"). If there is more than one correct solution, provide just one answer. B MeONa xs HBr Br₂, hv 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 more than one correct solution, provide just one answer. D E F H₂. Pt H₂, Lindlar's cat Mel G H NINH, xs HBr, ROOR HC CN Reagent(s): Propose an efficient synthesis for the following transformation. A B с H₂, Lindlar's cat. NaNH2 H₂, Pt D E F HBr MeONa Mel E. The synthesis above used bromobutane, but acetylene is the only allowed source of carbon atoms. Identify a synthetic route for the production of bromobutane from acetylene. H 1st reagents 2nd reagents 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 more than one correct solution, provide just one answer. The transformations above can be performed with some combination of the reagents listed below. Give the necessary reagents in the correct order for each transformation, 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 A B H₂ Lindlar's cat. HBr, ROOR 11 xs NaNH2,2) H₂O E D HBr Brz H₂SO4, H2O, HgSO4 G H 1) 03:2) H₂O MeONa 1) R₂BH; 2) H₂O₂, NaOH Mel Br2, hv D E F HC=CNa H₂, Lindlar's cat. HBr G Н I NaNH2 HBr, ROOR H₂. Pt. Propose an efficient synthesis for the following transformation. C.The transfor 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 more than one correct solution, provide just one answer. 1st reagents: 2nd reagents: 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 string of letters (without spaces or punctuation, such as "EBF"). If there is more than one correct solution, provide just one answer. A Brz B HBr, ROOR cat. OsO4, NMO D E HBr H₂. Pd F H2SO4, H₂O, HgSO4 G H 1) O: 2) DMS 13 xs NaNH2, 2) HEO 1) R₂BH; 2) H₂O NaOH t-BuOK D H₂SO4. H₂O, HgSO4 с 1) O; 2) DMS Br₂, hv E F H₂. Lindlar's cat. HC=CNa G H HBr HBr, ROOR 1) R2BH; 2) H2O2, NaOH