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- 6. Provide the missing reagent(s) that gives the desired product in high yield. POMOL 129 129 16m2 sn RCH₂CH₂ ? CH₂CH₂R 20112⁰ D">OH H₂CO-D H H A) NaOCH3 B) 1. TsCl/Base; 2. NaOCH3 C) 1. NaH; 2. CH3I D) 1. CH3COCI/Base; 2. NaOCH3Identify the reagents needed to come up with the given compounds. Write your answers on the space/field provided. Separate the reagents with a comma and a space. (ex. HNO3, H2SO4). For a multi-step reaction, separate the reagents with a semi-colon. (ex. HNO3, H2SO4; CH3CI, AICI3) a b d ОН e Br3. Which of the sequences of reagents given below works best to convert 3-hexene to 3-hexyne? A. 1. HCI 2. NaNH2 B. 1. BH3 THF 2. HO-, H2O2 3. NaNH2 C. 1. NaNH2 2. HI 3. H3O+ D. 1. Br2, CCl4 2. KOH, 200°C E. 1. Cl2, CH2Cl2 2. NaCN (excess)
- Provide the reagents. Но + enantiomer A 1. KOt-Bu, heat 2. mCPBA 3. MeMgBr 4. H2O B. 1. conc. H,SO4, heat 2. MCPBA 3. MeBr С. 1. РBгз 2. KOt-Bu 3. mCPBA 4. MeMgBr 5. H2O D. 1. Br2, hv 2. KOt-Bu 3. mCPBA 4. MeMgBr 5. H2O E. 1. Br2, hv 2. KOt-Bu 3. MCPBA 4. MeBr 5. H2O F. 1. Br2, FeBr3 2. KOt-Bu 3. mCPBA 4. MeMgBr 5. H2O G. 1. Br2, FeBr3 2. KOt-Bu 3. mCPBA 4. MeBr 5. H20CH3CH2CHCH2CH3 CH3CH2CHCH2CH3 2. NACN 3. H3o* (b) _CH2CO2H CH2CH3 1. LIAIH 2. H30* (c) он он CH3CH2CH2CI ČH3 1. NaCN 2. H30* CH3CCH2CH2COH ČH3 2. Identify the missing reagents a-f in the following scheme: Br CO2H CHOWhich sequence will result in this transformation in good yield? 1. HBr 2. NaCN A ÕH 1. PCC or DMP 2. NaCN B ? ČN 1. p-TosCl, pryidine 2. NaCN C 1. PBr3 2. NaCN D
- 3. Reactions. Suggest reagents for steps a-d in the following synthetic sequence CH3 CH3 CH3 b. a. HO CH3 CH3 но, LDA or strong base CH3 CH3 CH .CN с. но. CN d. CH3 H3C CN H3C CN Draw the major product of the following reactions H3C. 120 °C CN (no need to show stereochemistry) H2 (gas) cat. Pd (show relative stereochemistry)Select the reagent(s) necessary for the given step of these synthesis pathways: Reagents available a. CH3 CH2 COCi f. PB33 b. C6 H5 COCI g. Mg, ether c. AlCl3 h. H2SO4, conc d. NaBH4, ethanol i. SOCI2 e. Н,SO4, dil j. C6H5 CN Scheme 1: он Br CH3 CHa CH3 MgBr CH3 C-H CH,CH3 но CH2CH3 Step 2 : Previous Next Step 7:. Provide the reagents necessary to carry out the following conversion. OH u NaOH/H₂O 1. NaOCH3, 2. H₂O¹ 1. (CH₁) COK, 2. BH3, 3. H₂O/NaOH/H₂O | 1.(CH3)COK, 2. HO
- Explain why each of the following reactions will not proceed as written. [1] LDA + Co2 a. C. [2] CH;CH2I COOH [1] NaOEt b. CH2(CO,Et)2 (CH,CH2),CCH(CO̟Et)2 (2] (CH3CH2),CBrWhat sequence of reactions will convert benzene to o- bromoethylbenzene? Select one: O A. O C. Br₂/FeBr3 CHICI CH3-C-CI /AIC CH3-C-CI / AICB H₂SO4(SO3) Br2/FeBr3 CH3CH₂C/AIC H₂SO4(SO3) Br 1) NaBH4 2) H*(aq) Zn(Hg), HCl(aq) Br2/FeBr3 heat H₂O/H+ heat Br2/FeBr3 CH3CH₂CI/ AI CB40. Arrange the following alkylhalide in order of decreasing reactivity in an SN1 reaction: I. CH;CH(Br)CH½CH3 II. CH;CH(CI)CH2CH3 III. CICH2CH2CH2CH3 IV. (CH3)2C(Br)CH½CH3 A. I>II>III>IV B. IV>III>II>I C. IV>I>II>III D. IV>II>I>III