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Chemistry > Alcohol, Phenol, Ether and Ethoxides > Flashcards

Alcohol, Phenol, Ether and Ethoxides Flashcards

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1
Q

Relation between acidic strength and EWG/EDG.

A

EWG increases and EDG decreases acidic strength.

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2
Q

Oxidations series: Of Alcohols

A

Hydrocarbons→ Alcohol→ Aldehyde/Ketone → Carboxylic acids→ CO2

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3
Q

Name few mild oxidizing agents

A
  1. PCC (pyridinium chlorochromate)
  2. PDC (pyridinium dichromate)
  3. Collins reagent (dipyridine chromium)
  4. Cu and 573 K
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4
Q

Strong Oxidizing agents

A
  1. Aqueous soln. of hot Alkaline KMnO4
  2. Acidified K2Cr2O7 or NaCr2O7
  3. Jones reagent
  4. Chromic Acid
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5
Q

Jones Reagent

A

CrO3, conc. aq. H2SO4, Acetone

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6
Q

Chromic Acid

A

H2CrO4

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7
Q

3° ROH reacting with Cu with heat gives

A

Alkene

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8
Q

1° and 2° ROH reacting with Cu with heat gives

A

Oxidized product

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9
Q

Baeyer’s reagent is

A

cold dilute aqueous solution of 1% alkaline KMnO4.

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10
Q

Ways of preparation of alcohols from alkene are

A

a. By acid catalyzed hydration
b. Oxymercuration - Demercuration
c. Hydroboration - Oxidation of alkenes
d. By action of Baeyer’s reagent / syn dihydroxylation/ Baeyer’s test
e. Using peroxides/ Anti dihydroxylation

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11
Q

What is different in Baeyer’s test?

A

It ‘forms diols’ through syn addition.

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12
Q

What reagent can be used to form diols other than Baeyer’s reagent?

A

1). OsO4 —> 2). NaHSO3/ H2O⁺

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13
Q

Which one is anti in formation of alcohols from alkenes?

A

Peroxides usage / anti dihydroxylation

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14
Q

How peroxides make a difference?

A

They form diols through anti addition.

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15
Q

Several Peroxides used are

A
  1. Peracetic acid
  2. Trifluoroperacetic acid
  3. meta - chloroperoxybenzenoic acid
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16
Q

Order towards Grignard Reagent is

A

Acid chlorides > Aldehydes > Ketones > Esters

17
Q

Reducing agents of aldehydes/ketones to form alcohols are -

A

H2/Ni or Pd/Pt; LiAlH₄ ; NaBH₄

18
Q

Reagents of OM-DM

A

1). Hg(OAc)₂ / THF.HOH
2). NaBH₄, OH⁻

19
Q

What works better than Hg(CH₃COO)₂ ?

A

Hg(CF₃COO)₂

20
Q

What nucleophile in OM-DM can be use instead of H₂O?

A

ROH, RSH, etc.

21
Q

Reagent of HBO

A

1). B₂H₆/THF
2). H₂O₂/OH⁻

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