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ORG CHEM LAB > Amines > Flashcards

Amines Flashcards

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1 or more of the H has been replaced by an alkyl/ aryl group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

Nitro composed of

A

Nitrobenzene, picric acid and TNT

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26
Q

Nitrobenzene in Ferrous Hydroxide Test

A

Reddish Brown ppt

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27
Q

Positive result in in Ferrous Hydroxide Test

A

Reddish brown ppt

28
Q

Reagent of Ferrous Hydroxide Test

A

Fe(OH)2, H2SO4, Alcoholic KOH

29
Q

Function: identify Nitro compounds

A

Ferrous Hydroxide Test

30
Q

Nitrobenzene in Janovsky’s Test

A

Light yellow soln

31
Q

Picric acid in Janovsky’s Test

A

Blood red soln

32
Q

2,4-dinitrobenzene in Janovsky’s Test

A

Bluish-purple soln

33
Q

In janovsky, nitro compounds are treated w ____, yielding colored complex due to the formation of ________

A

Acetone ; Meisenheimer Complexes

34
Q

Building blocks of macromolecules

A

Amino acids

35
Q

Amino acids composed of

A

Carbonyl, amino, and substituent attached to a-carbon

36
Q

Amino bond in between the two linked amino acids

37
Q

1% glycine in Ninhydrin Test

A

Blue solution

38
Q

Analine in Ninhydrin Test

A

Golden brown solution

39
Q

Positive result of Ninhydrin Tets

A

Blue-purple soln.

40
Q

Yellow soln; very strong oxidizing agent

A

Ninhydrin Test

41
Q

Function: general test for amino acids

A

Ninhydrin Test

42
Q

Principle of Ninhydrin Test

Ninhydrin reacts w amino acids -> intermediate product hydrindantin -> form _____

A

Ruhemann’s Complex

43
Q

Principle of Ninhydrin Test

bright yellow color

44
Q

Principle of Ninhydrin Test

brown colored

A

Asparagine

45
Q

Urea in Biuret Test

A

Purple/pink soln

46
Q

1% albumin in Biuret Test

A

Purple soln

47
Q

1% tyrosine in Biuret Test

48
Q

1% glycine in Biuret Test

49
Q

Reagent of Biuret Test

A

CuSO4 in alkaline soln

50
Q

Function: general test for peptides -medical diagnostic testing

A

Biuret Test

51
Q

Principle of Biuret Test

Produced when ____ is heated at 180C

52
Q

Naturally occurring containing basic H atoms

53
Q

very diverse biomolecules; derived from amino acids (in what process?)

A

Alkaloids ; transamination process

54
Q

Bitter taste; cc; crystalline; used for medicinal properties

55
Q

Positive result of Biuret Test

A

Purple soln

56
Q

Alkaloids can be classified into ways

A

Biological/ ecological activity, chemical structures and Biosynthetic Pathways

57
Q

Types of alkaloids

A

True alkaloids, protoalkaloids, pseudoalkaloids

58
Q

Derived from amino acids; share heterocyclic ring w nitrogen

A

True alkaloids

59
Q

Nitrogen derived from an amino acids is not a part of the heterocyclic ring

A

Protoalkaloids

60
Q

Basic c skeletons are not derived from amino acids

A

Pseudoalkaloids

61
Q

______ can be employed to detect the presence of alkaloids through the formation of ppt using ___

A

Qualitative chemical test ; precipitant reagents

62
Q

Consist of dehydrating, oxidizing or both

A

Ppt Reagents

63
Q

Dragendorff’s reagents
(Component and positive result)

A

Potassium Bismuth Iodide ; orang ppt

64
Q

Mayer’s reagents
(Component and positive result)

A

Potassium mercuric iodide ; reddish brown ppt

65
Q

Wagner’s reagents
(Component and positive result)

A

Iodine in Potassium Iodide ; reddish brown ppt

66
Q

Valser’s reagents
(Component and positive result)

A

Mercuric Iodide soln ; white ppt

67
Q

Hager’s reagents
(Component and positive result)

A

Saturated picric acid soln ; yellow ppt

ORG CHEM LAB (3 decks)

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