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. CI+AICH D. NaNO₂, HCI G. H₂O, heat OH B. E. CUCN +AICH H. HNO3, H₂SO4 C. Ia AICH F. 1) HCI, Zn(Hg), heat; 2) NaOH 1. Cl₂, AICI3

Propose an efficient synthesis for the following transformation: OMe S. S H 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. SH A. OH + acid B. + acid C. HS HO j + + acid D. H3O+, heat E. [H+], CH3NH2 F. 1) Et2CuLi; 2) H3O+ G. Na2Cr2O7, H2SO4, H2O H. 1) LIAI(OR)3H; 2) H3O+ I. 1) LiAlH4; 2) H3O+ J. SOCI 2 K. PCC or DMP L. RCO3H

Propose an efficient synthesis for the following transformation: (g) Eto 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. H3O+ D. PCC or DMP OEt B. cat. acid (-H₂O) E. xs LiAlH4 С. НО F. HO OH OH + cat. H₂SO4 + NaH

From the table of available reagents select the one(s) you would use to accomplish the transformations shown below. Use the minimum number of steps; in no case are more than two steps necessary. List reagents by letter in the order that they are used.

Identify reagents that can be used to achieve the following transformation): OH он 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. LDA, -78°C B. NazCr207, H2SO4, H2O C. PCC or DMP D. NaH, 25°C E. 1) EtMgBr; 2) H3O* F. CH3CH2B. G. SOCI2 Н. 1) LIAIH4: 2) HзО* I. CH3I

Propose an efficient synthesis for the following transformation: -CN 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 B HBr, ROOR D HBr G Br2, hv 1) xs NaNH, 2) H₂O E 1) BH 3 THF 2) H₂O2, NaOH H NaOEt C TsCl, pyridine F t-BuOK I NaCN

Propose an efficient synthesis for the following transformation: OH H. 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 NaOH 1) MeMgBr; 2) H3O* Na2Cr2O7, H2SO4, H20 t-BUOK F G H. H2, Lindlar's cat. 1) O3; 2) DMS TSCI, py dilute H2SO4 K 1) LIAIH4; 2) DMP or PCC 1) EtMgBr; 2) H3O* 1) BH3-THF; 2) H2O2, NaOH H3O*

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

Propose an efficient synthesis for the following transformation: OH OH 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. SOCI₂ D. PCC or DMP B. 1) CH3CH₂MgBr; 2) H3O+ E. (CH3CH₂)2CuLi C. 1) LIAI(OR) 3H; 2) H3O+ F. 1) LIAIH4; 2) H3O+

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