Draw the major product of this reaction. Ignore inorganic byproducts. IN H cyclopentanone pH 4-5 Draw Enamine 1. CH3CH=CHCHO, heat 2. H3O+ Drawing
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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. NaOCH3i. LIAIH4 i. deprotection .CO2ME J CH2=CHCOCH3 protection ii. H30* ii. dehydration K H The synthesis of K from H involves a 3-steps reaction as shown above. ii. Suggest the reagents involve in the protection, deprotection and dehydration steps.a) Give the major products or reagents represented by letters A-F: Me NABH, i) MeOH i) CH3NH2 LIAIH4 CI iii) H20 HO. C Br i) NaCN iv) HD ii) H3O i) Base v) OEt ii) H,0 / Heat CHO e OH vi) F H. H20
- W X Select reagent W and Y 1 HNO3 H₂SO4 2 CH3C1₂ AICI 3 3 Cl₂, FeCl3 ) 4 503, H₂SO4 NO₂ S0₂t2. Consijder the reactiojn scheme below a. Draw the major product of this reaction. Show clearly (using wedge-and-dash lines) all stereoisomers formed under these reaction conditions. 1. BH3:THF 2. H2O2, NaOH b. What is the stereochemical relationship between the different stereoisomer products you drew in part 2a.?Draw the major product(s) of the following reactions, if there is a reaction. Be sure to include stereochemistry in your products. 1. NaBH4 2. Нзо* 1. Nac=CH 2. Hо* H. CH;MgBr Ph CH3 Ph- -P= 0: Ph H H3C :O H3C H3C. 'N' H. CH3 CI SOCI2 pyridine
- CH3CH2CHCH2CH3 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 CHO10) Give the major organic product(s) or reagents needed. Show stereochemistry where appropriate. a) OH K2Cr207, H2SO4, H2O HO. b) Br. B(OH)2 Pd(PPH3)4, NaOH(aq) c) Br2, H20 но CI d) B-H e) 1) NaH 2) 3) G1 Ru Catalyst ноProblem 19 of 85 Submit Draw the major product of this reaction. Ignore inorganic byproducts. 1. NaOCH2CH3, 25°C 2. PhCH2Br (1 equiv) Select to Draw >
- 13. Compound 1 is an acetyl protected precursor of the phytonutrient pterostilbene (2), a natural antioxidant founs blueberries. Which reagents would you use to synthesize 1 starting with 3 and 4? Sal A) PhB(OH)2, KCO₁ B) Pd(OAC)2, 2 PPh₁, K₂CO C) Cul, H₂O/H₂0 D) NaOEt/EtOH 14. Which is a D-sugar? O HO- HOH HO-H HO-H A CH₂OH A H A HO- --H HO-H H- HO-H 15. Which of these compounds is the best Michael acceptor? CH₂OH B 16. What is the final product of this reaction sequence? B -OH B CI SO₂H NaCN DMSO . This compound does not undergo Diels-Alder reactions ber A) it lacks electron-withdrawing groups B) it lacks strong electron C) It cannot al HO- H-OH -H H-OH H- da C 2 in -OH CH₂OH C 70% H₂SO4 reflux HO -H HOH H-OH -H CH₂OH D HO- OH 3. D OHWhat is the major product of this reaction? olo Br2 (one equivalent) ? Br Br (a) (b) Br (c) (d) Br O A. (a) В. (Ь) C. (C) D. (d)Name the following structure CI 1111 A. (45)-4-Chloro-4-methyl-2-hexyne B. (35)-3-Chloro-3-methyl-4-heptyne C. (3R)-3-Chloro-3-methyl-4-hexyne D. (4R)-4-Chloro-4-methyl-2-hexyne