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26. Choose the correct R/S designations for the indicated stereocenters. Meo Explain N Ph A 1R 2R D 15,2R (в 19,25 Not Stereocenters 1R.25 C 27. Choose the pair of representations that both represent the same meso compound. NH2 HAN NH2 NH2 NH2 H NH NH2 NH2 Et B NH2 NH2 NH2 NH2 HN NH NH2 NH2 E!
provide the mechanism of the following reductive amination NH2 H₂N |—NH HN- ОН Amberlyst 15 Ethanol, NaBHA OH HO Unknown Carbonyl Compound (2 equivalents)
Which of these compounds is most basic? (A) NH N-H (D) -NH2
Which of the pH conditions shown below would give this heptapeptide an overall charge of +2? COOH CH2 CH NH NH. CH5 HN CH NH,— сH,CH,CH,CH NH NH2 NH C но CH CH2 CH C СООН (a) The cyclic structure means that the system will always be isoelectronic (b) рH %3 3 (c) Neutral pH (d) pH 10 (e) The system will always be charged as it is a zwitterion = 40 Which of the pH conditions shown below would...
Conceptual Checkpoint 20.19, Predict the product of each of the following reactions [H] TH] HN-NH2 2 HO--NH2 - H20 ? - H20 20.20. Identify the reactants that you would use to make each of the following compounds: NH2 . . Skill Practice 20.21. Draw a plausible mechanism for each of the following reactions. [TSOH] ΕΙΝΗ Lolo (TSOH) MexNH H₂O d'o.898 -H20 [H2SO.] ELNA - H20 [H2S01 Mo,NH - H20
Question 2 Which of the following is the weakest base? NH, CH,NH HN- H N- - - 0 = 0 = 0 2 0 Question 3 How is N- classified? A a quarternary ammonium ion B a quarternary amine oc a secondary amine OD. a primary amine O E a tertiary amine Question 4 What would be the final organic product of the following reaction? NaCN CH.CH,CI - organic 1) excess LiAlH product 2) H0 . C6H5CH2CH2C02H OB C6H5CH2CH2NH2 CH,CH,CHCN...
For each pair of molecules, which is more basic. A or B. Assume gas phase for each. А -NH2 B CEN HN A HN А NH NH2 А HN А CI B "NH2 B blank 1 blank 2 blank 3 blank 4 blank 5 Blank # 1 A/ Blank # 2 Blank # 3 Blank #4 AJ Blank # 5
Predict the product of the following reaction Br 1. Nang 2. H. Pd O NH2 HEN. NH2 HN
Describe the relationship between the following two molecules: NH2 NH A meso compound Enantiomers Diastereomers Conformational isomers Identical molecules Constitutional isomers Submit Answer Tries 0/1 Describe the relationship between the following two molecules: SH CH,SH Diastereomers Conformational isomers Identical molecules A meso compound Enantiomers Constitutional isomers Submit Answer Tries 0/1
4. Suggest mechanisms for these transformations. O OH NH2 H + N R HN HN 'N HH HNN LI