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- 19.69 Propose an efficient synthesis for each of the following transformations: (a) (b) (c) Br Br -C MeO OMe19.73 Propose an efficient synthesis for each of the following transformations: (f) Br H19.54 Predict the major product(s) from the treatment of acetone with the following: (d) [H], (CH3)2NH, (-H2O) (e) [H], NH2NH2, (-H2O) (f) [H], NH2OH, (-H2O) (g) NaBH4, MeOH (h) RCO3H (i) HCN, KCN (j) EtMgBr followed by H₂O (k) (C6H5)3P=CHCH2CH3 (1) LIAIH, followed by H2O
- 19.73 Propose an efficient synthesis for each of the following transformations: (d) OH -CN 0-0 Q-8" (e)22.35 Propose an efficient synthesis for each of the following compounds using the malonic ester synthesis: R-x (a) (d) OH OH OH Гафон (b) (c) COEF OH +2Br COEF (e)18.20 Write a stepwise mechanism for each of the following reactions. (a) O H (c) O HOG NaOH, H₂O -A NaOH, H₂O d of Plz solve all parts within 30-40 I'll upvote your answer (b) CH3 H NaOD D₂O you bou H D CH3 O Then sh
- 18.26 Predict the products of the following ether cleavage reactions: LOCH CH3 OC(CH3)3 (a) HI CF3CO,H, ? (b) H2O HI HI (c) Н,С— СНОСH,CH, (d) (CH3);CCH,OCH,CH3 H20 H2O21.30 Identify the reagents necessary for each of the following transformations: (a) (b) CI Br CN OH22.1 Which of the compounds shown below has the fewest a- hydrogens? (a) H 여 (b) (c) (d)
- 15.37 Write mechanisms that account for the products of the following reactions: موية OH HA (-H₂O) HA (b)A key step in the synthesis of the narcotic analgesic meperidine (tradename Demerol) is the conversion of phenylacetonitrile to X. (a) What isthe structure of X? (b) What reactions convert X to meperidine ?Quinapril (trade name Accupril) is used to treat high blood pressure and congestive heart failure. One step in the synthesis of quinapril involves reaction of the racemic alkyl bromide A with a single enantiomer of the amino ester B. (a) What two products are formed in this reaction? (b) Given the structure of quinapril, which one of these two products is needed tosynthesize the drug?