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Which proton would be abstracted first when this compound is treated with NaNH2? OH B H...
С. D. Which of the following sequences of reagents will be used to do the following transformation? он Он А. 1. KOtBu; 2. Hg(OAc)2, H2O; 3. NaBH 1. TsCl, pyr; 2. KO B ; 3. BH3-THF; 4. H202, NaOH 1. H2SO4, heat; 2. Hg(OAc), H2O; 3. NaBH 1. TsCl, pyr; 2. NaOH; 3. BH3 THF; 4. H202, NaOH В. С. 8. Select the best reagents for the reaction below. Br Br Na ? А. 1. OsO4; 2. NaHSO3, H20 В....
Identify the reagents to be used in the following synthetic schemes: (Specify the reagents you would use to carry out the conversion by using letters from the table. Write the letters in the order that they are used, e.g., abc.) Scheme1 CH3 CH3 CH3 CH3 OH Scheme 2 Br CH3 H3C CH3 CH3 a. BH3, THF then H202, OH h. NBS, CCl b. PBr3 c. Mg, ether then H3o* d. (CH3)2Culi e. Br2 f. NaNH2, NH3 g. H2O, H2SO4, HgSO4...
To convert benzaldehyde to 3.phenyl-2-propenoic acid which reagent would you choose to initially react benzaldehyde with? OA он ОВ. OH Ос OEL DB What is the major product of this reaction? MeNH2 H30+ HN HN А B с D A B с D Which reaction sequence would convert 1H-indene to 1-deuterioindane? A. 1. HCL 2. Nal 3. D20 B. 1. D2, Pd/C 2. Cl2, hv 3. Mg(s), Et20 4. H20 C. 1. BH3.THF 2. H202, OH" 3. PBr3 4. Mg(s),...
25) What reagents can best be used to accomplish the following transformation? A) H+, H2O B)1. BH3-THF 2. Ho, H202 C)1. Hg(OAc)2, H2O/THF 2. NaBH4 D)1. Hg(O2CCF3)2 CH3OH 2. NaBH4 E) NaOH, H20
1) R'-MgBr in THF 2)H,o NaH Ho or OH PAA X2. H20 1) Hg(OAc)2, R'OH 2) NaBH4, NaOH, H20 Os0 NaHSO, H2O I) 2)CH, SCH HyIO HBr ROOR 1)BH3. THF 2)H202, NaOH, H2O Mg, THF PBr3 NaOH )OTHF 2) H30 CrOj. H,SO, 1) NaH 2)RXDMF "О-R DMF PCC DCM ) THF 2) H3O+ SOCI pyridine Li Hexanes
18. Which sequence of reagents would be expected to accomplish the transformation of 1-butyne shown below? A) 1)H2O/H2SO4, HgSO4 cat.; B) 1)HBr C)1)H2, Lindlar catalyst; D) )HBr, peroxides; E) O 2) H2, Pt 2) H2, Pt; 2) BH3*THF; 2) NaOH; 2) H2O 3) NaOH 3) H202, NaOH 3) H2, Pt
Which reagents will accomplish the following transformation? OH HN H2N A. 1. MeMgBr/Et20 2. acid workup B. Zn° / HCI OC. NaBH4 (aq) OD. 1. LiAlH4 / Et20 2. acid workup Which is the major product of this reaction sequence? KOH H2O/H30* Hoc-Ppha ОА. OC
3. For every reaction chose suitable reagents and conditions: OH LCHE H + enantiomer SCH LH + enantiomer OCH UCH Reagents and conditions: a. H20, 60% H2SO4, 0-10°C b. H, Pt 1). Hg(OCOCH3)2, THF, CH-OH; 2). NaBH, CH3OH 1). BH3, THF; 2). H202, NaOH, H2O HBr, hv, (PhCOO), (NOTE: hv means light-promotes radical reactions) HBr, CH:COOH Bra, CCL, 0-(-5)°C
X Incorrect. The synthesis above used bromobutane, but acetylene is the only allowed source of carbon atoms. Using the reagents given, identify a synthetic route for the production of bromobutane from acetylene. ? H Br 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...
Practice Problem 11.18a Propose an efficient synthesis for the following transformation. OH 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 с H2, Lindlar's cat. HBr, ROOR 1) xs NaNH2, 2) H2O D E F HBr Br2 H2S04, H20,...