Scheme 1. Synthesis of Cyanoformamides from Amines NPh Me,N NMez, CO2 H. MozN R-NH2 N- NHPH CH,CN, -10 °C R. O Me,N P. R'O OR' CN .R N. R = Et, Ph
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- Q4 Complete the following reactions schemes by drawing the messing intermediate/products: HOR HOO R H,SO./H.0 Peraxyacid 1. (Acidic hydrolysis) он NalO. 2. OH HO Me,CO 3. Но- ZnCl, OH OMe "OH 4- Ozonolysis -H20IWhat is the intermediate A for the following Stork enamine synthesis? O. CI 1. H,C. CH3 C12H1402 p-TSOH (-H,O) 2. H3O* A.5. Draw the organic products formed in the following reactions. az vo 2169 snol mo 40-60 g a. b. N [1] LIAIH4 [2] H₂O odior hobnod noitibbs, ogrob [1] Mg Br [2] Å quore [3] H3O+ C. O OH Isprie [1] TBDMS-Cl, imidazole [2] CH3Li [3] H₂O [Indicate stereochemistry.] quong griynol is dit bruggmos lynddisa vesi tuontiv d. of enousNaBH42 OCH3 CH3OH
- MacBook Air Page |3 6. Give the complete mechanism for the following reaction. MgBr 1. 2. H,0* od of sluuslom anie b Aom ua (co (ogami 1omim ai ao sldasog cobo 7. Show the complete mechanism for the formation of a hemiactetal, when 3-methyl-2-butanone reacts with ethanol under acidic conditions (H2SO4).22) Pyridoxal pyrophosphate (PLP) can catalyze both a,ß-elimination reactions and B,y-elimination reactions. Propose a mechanism for the following PLP-catalyzed B.y-elimination. H X-CH₂CH₂C-COO- NH3* Pio OH enzyme CH₂CH₂C-COO- +X+ NH4* !!12.Each of the following gives methylammonium chloride, CH3NH3+ CI, when hydrolyzed in aqueous acid solution except one. Which one? 0 A) NCH; ANCH₂ dal OBCHalstiuen bns noilspitinoqs8 8 priw ot ont to doirlw ablaiy woled nwore as eisteos Salubong beledal vilsoigolosi NHCH; NCH; O D))
- itagram video by Mrbioo N X D Time-ManiMo 2019 X E New ta Content Owt21Oine teaching and te O https://cvg.cengagenow.com/ilr/takeAssignment/takeCovalentActivity.dolocatorasigrment-take Draw the structure(s) of the major organic producti(s) of the following reaction. NH2 Trace of acetic acid ethanol • You do not have to consider stereochemistry. • Draw one structure per sketcher. Add additional sketchers using the drop-down menu in the bottom right comer. Separate multiple products using the + sign from the drop-down menu. C P opy aateL 15. Draw the mechanisms for these reactions. ( O acid a. + H₂N—OH он EN OH 1 + H₂O b. base + H₂C=O A C. O TSOH + 2 CH₂OH BO 4 + H₂O - 0. 0- + H₂O " - " HMalonic ester synthesis A-29tclans bns elon 4. Write the reaction showing all intermediates when H₂C(CO₂Et)2 (diethyl malonate) is reacted with NaOEt followed by 1) ethyl iodide; 2) NaOH; 3) H3O+; 4) A. Hint: Remember that B-oxo carboxylic undergo decarboxylation (loss of 1 equivalent of CO₂) when strongly heated. acids urbrit 21 noipen honey
- For structure J, substitute the variable A with a carbonyl group and the variable B with an methyl group The following reaction is carried out What are the reaction conditions synthesize this product? AHCO, BKMnO Structure)+ ??? Na Cro ⒸHSOTHO (E) Dess-Martin periodinane, dichloromethane 1-pentanal A J B17). What is the product of the following Acetoacetic Ester Synthesis? glan gem (A) OH OEt 1). 1 eqiv. NaOEt 2). 1 equiv. CH3CH₂Br (B) CH3 (C) .OH CH3 3). H3O+, then Heat (D) (E) OEt HO OEtQ21. Find out the structure of compounds 1-3 in the following multistep synthesis. он DMSO, (COCI)2 NaOH LDA in THF 1 in water 3 then NEt then heat Q22. Describe the mechanism of the aldol reaction catalyzed by L-proline and find out the product structure. Try to describe the catalytic cycle. Proline cat. (20 mol%) NO in MEOH/H,O (RT)