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ORG CHEM LAB > Amines > Flashcards

Amines Flashcards

(67 cards)

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1
Q

Amino Group

A

Amines (NH2)

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2
Q

1 or more of the H has been replaced by an alkyl/ aryl group

A

Derivatives of ammonia

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3
Q

Classifies as primary, secondary, and tertiary

A

Amines

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4
Q

Amines prepared through ____ of nitro, nitrites and amino

A

reduction reactions

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5
Q

Synthesis: direct alkylation of NH4 by alkyl halides

A

Primary amines

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6
Q

Analine in Reaction w/ concern HCl

A

Formation of solid and smoke

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7
Q

Brønsted Lewis base; alkaline strength

A

Amines in Reaction w/ concern HCl

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8
Q

Amines react w/ acids

A

Salt product (accepting proton)

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9
Q

Analine in Reaction w/ bromine water

A

cc soln with white ppt

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10
Q

Reaction: Electrophilic aromatic substitution

A

Reaction with bromine water

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11
Q

White ppt ( Reaction w bromine water )

A

2,4,6-tribromophenylamine

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12
Q

Decolorization of soln. ( Reaction w bromine water )

A

Hydrobromic acid

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13
Q

Analine in Hinsberg test

A

Formation of ppt

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14
Q

N-methyl analine in Hinsberg test

A

Formation of ppt

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15
Q

N,N-dimethyl analine in Hinsberg Test

A

cc soln

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16
Q

Positive Result in Hinsberg:

Soluble in water and reprecipitating w dilute HCl

Insoluble in water and dilute HCl

A

Sulfonamides
Secondary amines

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17
Q

Reagent in Hinsberg Test

A

Benzene sulfonyl chloride

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18
Q

Principle in Nitrous Acid
Primary react w nitrous
Secondary react w nitrous
Tertiary react w nitrous

A

N gas -> alcohol
N-nitrosamine
Water soluble NH4 salts

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19
Q

Analine in Reaction w/ Nitrous Acid

A

Formation of effervescence

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20
Q

1% glycine in Reaction w/ Nitrous Acid

A

Formation of effervescence

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21
Q

Positive Result of Nitrous acid:
Primary
Secondary
Tertiary

A

Formation of effervescence
yellow, oil layer
cc soln

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22
Q

benzene and nitro group

A

Nitro (NO2)

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23
Q

Strong electrophilic

A

N+

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24
Q

When the nitro group is attached to an aromatic ring, it becomes _______

A

unreactive

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25
Nitro composed of
Nitrobenzene, picric acid and TNT
26
Nitrobenzene in Ferrous Hydroxide Test
Reddish Brown ppt
27
Positive result in in Ferrous Hydroxide Test
Reddish brown ppt
28
Reagent of Ferrous Hydroxide Test
Fe(OH)2, H2SO4, Alcoholic KOH
29
Function: identify Nitro compounds
Ferrous Hydroxide Test
30
Nitrobenzene in Janovsky’s Test
Light yellow soln
31
Picric acid in Janovsky’s Test
Blood red soln
32
2,4-dinitrobenzene in Janovsky’s Test
Bluish-purple soln
33
In janovsky, nitro compounds are treated w ____, yielding colored complex due to the formation of ________
Acetone ; Meisenheimer Complexes
34
Building blocks of macromolecules
Amino acids
35
Amino acids composed of
Carbonyl, amino, and substituent attached to a-carbon
36
Amino bond in between the two linked amino acids
Peptide
37
1% glycine in Ninhydrin Test
Blue solution
38
Analine in Ninhydrin Test
Golden brown solution
39
Positive result of Ninhydrin Tets
Blue-purple soln.
40
Yellow soln; very strong oxidizing agent
Ninhydrin Test
41
Function: general test for amino acids
Ninhydrin Test
42
Principle of Ninhydrin Test Ninhydrin reacts w amino acids -> intermediate product hydrindantin -> form _____
Ruhemann’s Complex
43
Principle of Ninhydrin Test bright yellow color
Proline
44
Principle of Ninhydrin Test brown colored
Asparagine
45
Urea in Biuret Test
Purple/pink soln
46
1% albumin in Biuret Test
Purple soln
47
1% tyrosine in Biuret Test
Blue soln
48
1% glycine in Biuret Test
Blue soln
49
Reagent of Biuret Test
CuSO4 in alkaline soln
50
Function: general test for peptides -medical diagnostic testing
Biuret Test
51
Principle of Biuret Test Produced when ____ is heated at 180C
Urea
52
Naturally occurring containing basic H atoms
Alkaloids
53
very diverse biomolecules; derived from amino acids (in what process?)
Alkaloids ; transamination process
54
Bitter taste; cc; crystalline; used for medicinal properties
Alkaloids
55
Positive result of Biuret Test
Purple soln
56
Alkaloids can be classified into ways
Biological/ ecological activity, chemical structures and Biosynthetic Pathways
57
Types of alkaloids
True alkaloids, protoalkaloids, pseudoalkaloids
58
Derived from amino acids; share heterocyclic ring w nitrogen
True alkaloids
59
Nitrogen derived from an amino acids is not a part of the heterocyclic ring
Protoalkaloids
60
Basic c skeletons are not derived from amino acids
Pseudoalkaloids
61
______ can be employed to detect the presence of alkaloids through the formation of ppt using ___
Qualitative chemical test ; precipitant reagents
62
Consist of dehydrating, oxidizing or both
Ppt Reagents
63
Dragendorff’s reagents (Component and positive result)
Potassium Bismuth Iodide ; orang ppt
64
Mayer’s reagents (Component and positive result)
Potassium mercuric iodide ; reddish brown ppt
65
Wagner’s reagents (Component and positive result)
Iodine in Potassium Iodide ; reddish brown ppt
66
Valser’s reagents (Component and positive result)
Mercuric Iodide soln ; white ppt
67
Hager’s reagents (Component and positive result)
Saturated picric acid soln ; yellow ppt

ORG CHEM LAB (3 decks)

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