Propose an efficient synthesis for the following transformation: OH - OH The transformation above can be performed with some reagent or combination of the reagents liste reagents in the correct order, as a string of letters (without spaces or punctuation, such as "EBF"). If t solution, provide just one answer. A. SOCI₂ D.PCC or DMP B. 1) CH3CH₂MgBr; 2) H3O+ E. (CH₂CH₂)₂Culi C. 1) LIAI(OR) 3H; 2) H3O+ F 1) LAIL 21

Which of the following substrates will undergo an SN2 reaction most rapidly ? CH3 II CH3 II CHя — CH —Br CH;-C-Br ČH3 CH;-CH-Br Select one: А. I B. II C. I D. In SN2 reactions, I, II, and II are equally reactive.

Identify the correct reagents and conditions to perform this chemoselective reaction: H ရှုံး H Select one: Me e. Reagent(s) and conditions? a. NaBH4 b. BH3 THF Pd/BaSO4, H₂ (1 atm.), quinoline, Pb(OAC)2, MeOH d. Pd/C, H2 (1 atm.), MeOH DIBAL Me H H OH

Hw.40.

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 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. -COOH HO OH + acid D. H3O+, heat G. Na2Cr2O7, H₂SO4, H₂O J. SOCI₂ B. HS SH + acid E. [H*], CH3NH2 H. 1) LIAI(OR) 3H; 2) H3O+ K. PCC or DMP 요 C. + acid F. 1) Et₂CuLi; 2) H3O+ I.1) LIAIH4; 2) H3O+ L. RCO 3H

What is the reagent for this transformation?

Propose an efficient synthesis for the following transformation: OH 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. t-BuOK D. Br2 G. TsCl, pyridine B. NAOMe E. H₂, Lindlar's cat. H. 1) xs NaNH2; 2) H₂O C. conc. H₂SO4, heat F. H₂SO4, H₂O, HgSO4 I. 1) R₂BH; 2) H₂O2, NaOH

Propose an efficient synthesis for the following transformation: H 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. HBr, ROOR D. HBr G. PCC or DMP B. Na2Cr₂O7, H₂SO4, H₂O E. H₂SO4, H₂O, HgSO4 H. NaOH C. 1) BH3-THF; 2) H₂O2, NaOH F. 1) 03; 2) DMS I. 1) LiAlH4; 2) H3O+