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- 19.73 Propose an efficient synthesis for each of the following transformations: (f) Br H15.41 Draw the structures of the aldehydes that might be oxi- dized to yield the following carboxylic acids: (a) COOH (b) CH2COOH ČH3 OH (c) CH,CH=CHCH,COOH19.54 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
- 20.71 Propose an efficient synthesis for each of the following transformations: - (a) (b) MeO OMe Br Br (c)19.70 Draw a plausible mechanism for the following transformation: NH2 [H2SO4] NH2 (-H₂O)(S)-Glutamic acid is one of the 20 amino acid building blocks of polypeptides and proteins (Chapter 27). Propose a mechanism for the following conversion.
- Treatment of ethyl acetoacetate with NaOEt (2 equiv) and BrCH2CH2Br forms compound X. This reaction is the first step in the synthesis of illudin-S, an antitumor substance isolated from the jack-o'-lantern, a poisonous, saffron-colored mushroom. What is the structure of X?Treatment of ethyl acetoacetate with NaOEt (2 equiv) and BrCH2CH2Br forms compound X. This reaction is the rst step in the synthesis of illudin-S, an antitumor substance isolated from the jack-o’-lantern, a poisonous, saffron-colored mushroom. What is the structure of X?21.30 Identify the reagents necessary for each of the following transformations: (a) (b) CI Br CN OH
- Which of the following functional group (FG) will produce a ketone upon oxidation with K2CrO7? (a) RX (b) 10OH (b) 20OH (c) 30OH19.73 Propose an efficient synthesis for each of the following transformations: (d) OH -CN 0-0 Q-8" (e)21.9 Identify reagents that can be used to accomplish each of the following transformations: (a) OH (b) OH u H