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Chemistry > Haloalkanes And Haloarenes > Flashcards

Haloalkanes And Haloarenes Flashcards

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1
Q

State Wurtz rxn

A

2RX + Na = RR + 2NaX

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2
Q

State Finkelstein rxn

A

RX + NaI = RI +NaX

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3
Q

State Swartz rxn

A

RX + AgF = RF +AgX

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4
Q

What are Haloalkanes

A

Open chain of CX derivatives with halogen attached to sp3 hybridised C are haloalkanes

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5
Q

What are haloarenes

A

Close chain of CX derivatives where halogen is attached to sp2 hybridised C are haloarenes

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6
Q

Name a disease because of iodine deficiency

A

Goiter

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7
Q

How to prepare haloalkanes from alcohol

A

ROH + HX = RX +H2O
OR
ROH + PCl5 = RCl + POCl3

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8
Q

State Free Radical Halogenation

A

R + Cl2 + UV rays = RCl

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9
Q

How to create haloalkane form alkene

A

R=R + HX = R-RCl

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10
Q

How to prepare haloarenes form toulene

A

Toulene +X2 = o-halotoulene

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11
Q

Why we do not prepare flouro compounds from toulene

A

Due to high reactivity of Flouro compounds

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12
Q

State Sandmeyer rxn

A

Anilene + NaNO2 = BDC
BDC + Cu2X2 = haloarene

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13
Q

State physical properties of RX

A

Colourless when pure
Sweet smell
High MP and BP
(Boiling point decrease with increase in branching)

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14
Q

State NSR of haloalkanes

A

Nu- + RX = RNu + X-

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15
Q

What are ambident Nucleophile

A

Nucleophiles having two or more Nucleophilic centers
Examples CN, NO2

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16
Q

What is Mechanism of Sn2 rxn

A

Nu interacts with RX causing the CX bond to break and form new bond with attacking Nu

17
Q

What is inversion of configuration

A

The inversion of configuration of haloalkane due to attacking Nu is called inversion of configuration

18
Q

What is configuration

A

The 3d arrangement of functional group around C is called configuration

19
Q

State Sn1 mechanism

A

Polarised CX bond undergoes slow cleavage to produce a C+ ion .
C+ ion is then attacked by Nu

20
Q

State Grignard rxn

A

RX + Mg = RMgX

21
Q

Why are aryl halides less reactive toward NSR

A

CX have partial double bond character which are hard to break

22
Q

How to make phenol from aryl halide

A

Aryl halide + NaOH = phenol

23
Q

State Halogenation of aryl halides

A

Aryl halide +X2 +FeCl3 = di aryl halide

24
Q

State nitration of aryl halide

A

Aryl halide + Nitrating mixture =
Nitro aryl halide

25
Q

State sulphonation of aryl halides

A

Aryl halide + H2SO4 = aryl sulphonic acid

26
Q

State fridel craft rxn

A

Aryl halide + CH3Cl = halo toulene
Aryl halide + CH3COCl = halo Acyl benzene

27
Q

State Wurtz Fittig rxn

A

Aryl halide + Na + RX = phenyl

28
Q

State Fittig rxn

A

Halo benzene + Na = diphenyl

Chemistry (4 decks)

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