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Chemistry > Reagents > Flashcards

Reagents Flashcards

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1
Q

K2Cr2O7/H+

A

Oxidising agent

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2
Q

Cu/573 K

A

Catalytic dehydrogenation of alcohols to form ketones/aldehydes

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3
Q

Zn/H2O

A

Reductive ozonolysis

Preparation of aldehydes/ketones from alkenes

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4
Q

dil H2SO4/HgSO4

A

Hydration of alkynes to form aldehydes/ketones

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5
Q

Pd/BaSO4, S / xylene

A

Rosenmund’s rxn reagents
Acyl halides to aldehydes ONLY

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6
Q

SnCl2/HCl
H2O

A

Stephen’s rxn

Synthesis of aldehyde ONLY from CH3CN (acetonitrile or methyl cyanide)

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7
Q

DIBAL-H/H2O

A

Diisobutylaluminium hydride

Ester to aldehyde ONLY

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8
Q

conc. HNO3

A

oxidising agent

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9
Q

Ni/Pt/Pd

A

reduce C=C and C=O

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10
Q

LiAlH4

A

reduces C=O bond of aldehydes, ketones, esters, acid, amide

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11
Q

NaBH4

A

reduces C=O of aldehydes and ketones ONLY

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12
Q

Zn/Hg, HCl

A

Clemmensen reduction

aldehyde/ketone to alkane

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13
Q

KOH, glycol
473 K

A

Wolff-Kishner reduction
aldehyde/ketone + hydrazine to alkane

reagent on second arrow i.e. hydrazone to alkane

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14
Q

HI/red P

A

reducing agent
aldehyde/ketone to alkane

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15
Q

dil. NaOH
dil. HCl

A

Aldol condensation / Crossed-aldol condensation

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16
Q

CrO2Cl2/CCl4
H2O

A

Etard reaction
Lab preparation of benzaldehyde from toluene by oxidation with chromyl chloride

17
Q

Zn/dil. HCl

A

reducing agent

18
Q

alc. KCN
in the context of benzaldehyde

A

Benzoin condensation

19
Q

CH3COONa
H2O

A

Perkin’s rxn
Benzaldehyde + acetic anhydride –> cinnamic acid and acetic acid

20
Q

conc HNO3, conc H2SO4

A

nitration of benzaldehyde

21
Q

dry ether

A

Addition of RMgX

22
Q

FeCl3

A

Halogenation of benzaldehyde

23
Q

P2O5

A

Formation of acid anhydride from carboxylic acid

24
Q

CaO, NaOH

A

soda lime
Decarboxylation of sodium carboxylate to form alkane and sodium carbonate

25
Q

conc. H2SO4 in the context of carboxylic acids

A

Formation of ester from acid + alcohol

26
Q

Br2 in the presence of CCl4

A

Hunsdiecker reaction
Silver acetate to bromomethane

27
Q

partial reduction and complete reduction of carboxylic acids

A

partial: LiAlH4
complete: red P

28
Q

Cl2 + red P
Cl2
Cl2

A

Hell Volhard Zelinsky (HVZ)
carboxylic acid to alpha-bromo or alpha-chloro carboxylic acid

29
Q

FeBr3

A

Bromination

Chemistry (8 decks)

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