q. aldol of pentan-3-one with sodium hydroxide in water followed by acid r. caproic acid + methanol with HCI s. 2 equivalents of butyraldehyde + sodium hydroxide
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A: Aldol condensation: The alpha hydrogen of carbonyl compounds is acidic in nature and it is removed…
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Q: 2. Illustrate detailed mechanisms for below attempted aldol reaction. CH3 CH H NAOH ČH3
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Q: 2. Illustrate detailed mechanisms for below attempted aldol reaction. CH3 CH H. ČH3 Na OH
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Q: 10.Draw the structure of the product of the reagent(s) with the substrate: SOCI,
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Q: (disconnect to a "diketone" (a) (b) (c) starting material)
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Q: ÇI CI CI, CI CI = ČI OH
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Identify the initial site of reactions as well predict the major new product resulting from each of the following reactions
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- What is the best reaction to form a beta-ketone? 1. Aldol-Claisen Condensation 2. Aldol-Claisen Addition 3. Aldol Condensation 4. Claisen CondensationWhat functional group is formed as the final product of an aldol condensation? A. B-hydroxycarbonyl В. a,B-unsaturated carbonyl C. enol D. enolateDevise a 4-step synthesis of the product from the starting material. CH3 1. reagent 1 2. reagent 2 H3C HO. 3. reagent 3 4. reagent 4 H3C H. Select reagent 1: Select reagent 2: NH, CH,, cat. H,0+ CH, MGB. Select reagent 4: H, Pd NaBH, LIAIH,
- Identify the best reagents to complete the following reaction. 1. NaOH A 2. CH3CH2CH2NH2 1. HCI В 2. CH3CH2CH2NH2 ОН CH3CH2CH2NH2 C 1. SOCI2 D 2. CH3CH2CH2NH2 1. CH3CH2CH2NH2 E 2. SOCI2 NH,In an aldol condensation where cyclopentanone reacts 1:1 with Ortho- methoxybenzaldehyde. How many signals would appear in an HNMR for the condensation product? а. 9. o b. 7 С. 10 d. 11 O . 811.-15. Match each reagent to how it reacts with Y is from the reagent. Answers may be repeated. 11. Br₂ 12. HSCH3 13. NaBH4_ 14. NH₂OH 15. (CH3)2Cu Lit HO. a. b. C. d. e. not a.-d.
- 9. What type of product results when an aldehyde undergoes an aldol reaction with heat? a. conjugated diene b. B-hydroxy aldehyde c. a,ß-unsaturated aldehyde d. B-ketoesterWhich statement describes why aldol reactions with ketones are low yielding? A.Ketones do not have acidic protons. B.Ketones are too electron poor at the carbonyl carbon. C.Ketones can attack other ketones well but perform poorly in self-condensations. D.The product of a ketone addition to a ketone has considerable steric strain.Please pronde ne approprate reagents or product. 1.Os0y,TBHP, H20/THF -> 2. TSOH, acetone, PhH,neat 3. AICI3, CH3COCI, CH2C12 2) 1. B200B2,NBS, CC14> 2. Mg, THF;then Pa°Ln, PhBr 3. HNO3 , HzSo4 4. 2n, HCI me Br Me0 (3 meo MeN HN Meo me Br
- Provide the appropriate reagents or product in the following examples. 1. Me OH Me Me Me Me 2. 1. NABH. MEOH 2. TSCI, pyridine 3. NaCN, DMF, heat 3. 1. BZOOBZ, NBS, CCu, heat Me NO2 2. FeBr 3. Zn, ACOH CI OMe 4. Br H,N 5. OMe OMe 1. oxalyl chloride, DMSO, CH,C2 EtgN 2. PhMgBr, THF; aq. HCI Me OH Me 3. PBrg. CH,Cl, 4. EILI (2 equiv), Cul (1 equiv), THE Me 7. онWhich reaction (s) does an anhydride produce? HO. NEl3 CI КОН I. calor OK II NH2 O. IV HO HO. calor III a. Ob., IV Oc. I, II d., II, III, IVWhich of the following molecules is most nucleophilic? OA. NaOCH₂CH3 OB. CH3CH₂OH OC. NaOC6H5 OD. C₂H5OH 1 E.CH3COONa