Practice_Quiz_20_blank

Practice_Quiz_20_blank - between 5 - 8 as shown below. N(CH...

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Practice Quiz 20 (1) Provide the missing products of the reactions below. (A) C O = C O N H (i) KOH (ii) CH 3 CH 2 CH 2 CH 2 Br (B) NO 2 CH(CH 3 ) 2 (i) Fe/HCl/H 2 O, heat (ii) KOH/H 2 O (C) =O + CH 3 CH 2 CH 2 CH 2 NH 2 H 2 Ni (D) p-O 2 NC 6 H 4 CH 2 CN H 2 Ni
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(2) Provide IUPAC names for the following amines. CH 3 CH 2 CH 2 NHCH 3 CH 3 CHCH 2 CH 2 NH 2 CH 3 CH 3 CH 2 CHCH(CH 3 ) 2 NH 2 N(CH 3 ) 2 N(CH 3 ) 2 N (3) Answer the following questions (A) Which is the stronger base in each of the following pairs of compounds? CH 3 CH 2 CNH 2 CH 3 CH 2 CH 2 NH 2 O = A NH 2 NH 2 B N N H C
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(B) Which is the stronger acid in each of the following pairs of compounds? NH 3 + Cl - NH 3 + Cl - NO 2 A NH 3 + Cl - CH 3 NH 3 + Cl - CF 3 B
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(3) Provide the missing structures in the synthetic sequence below. CH 3 Cl (i) KMnO 4 , KOH, H 2 O/heat (ii) H 3 O + dissolves in aq NaHCO 3 solution SOCl 2 excess NH 3 C 7 H 6 NOCl Br 2 ,KOH H 2 O C 6 H 6 NCl
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(4) Provide the missing structures in the synthetic sequence below. NO 2 (i) Sn/ aq HCl, heat (ii) aq KOH C 6 H 7 N NaNO 2 aq HCl, 0-5 o C CuCl CuCN
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(5) The coupling of diazonium salts to anilines occurs fastest in a pH range
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Unformatted text preview: between 5 - 8 as shown below. N(CH 3 ) 2 + N 2 Cl +-N=N (CH 3 ) 2 N rate of coupling pH 2 4 6 8 10 12 Explain this pH dependence. (6) When equivalent amounts of cyclohexylamine and benzenesulfonyl chloride are added to an aqueous solution of KOH, a clear solution results. When acid is added, a white precipitate forms. But when equivalent amounts of N-methylcyclohexylamine and benzenesulfonyl chloride are added to an aqueous solution of KOH, a white precip[itate immediately forms. Write out equations that explain these observations. (7) Provide the missing structures in the following reaction scheme. N CH 3 CH 3 + CH 3 I Ag 2 O H 2 O a salt a salt vigorous heating C 8 H 17 N (i) CH 3 I (ii) Ag 2 O/H 2 O (iii) 200 o C C 6 H 10...
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Practice_Quiz_20_blank - between 5 - 8 as shown below. N(CH...

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