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Chem110: Term 2 > Block 6: Functional Groups 2 > Flashcards

Block 6: Functional Groups 2 Flashcards

1
Q

What does the OH of an alcohol act as?

A

Either an acid or a base

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2
Q

For aromatic rings, how do electron withdrawing groups affect acidity?

A

They increase acidity as they stabilise the phenoxide anion

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3
Q

In an aromatic ring, how do electron donating groups affect acidity?

A

They decrease it as they destabilise the phenoxide anion

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4
Q

Reagent for alkyl halide hydrolysis to form an alcohol?

A

HO-

Or H2O

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5
Q

Reagent for preparing alcohol from alkenes?

A

H2O

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6
Q

Reagent for hydrocarbon-oxidation? (Ie; CH3CH=CH2)?

A

B2H6

HO-, H2O2

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7
Q

Reagent for aldehyde reaction to primary alcohol?

A

NaBH4,

H3O

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8
Q

Reagent for ketone reduction to secondary alcohol?

A

NaBH4

H3O

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9
Q

Reagent for reduction of an ester to a primary alcohol?

A

LiAlH4

H3O

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10
Q

Reagent with Grignard reagent to form a primary alcohol with one more carbon?

A

HCHO (methanal)

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11
Q

Reagent with Grignard reagent to form a secondary alcohol?

A

Aldehydes RCHO (R doesn’t equal H)

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12
Q

What reacts with a Grignard reagent to equal a tertiary alcohol?

A

Ketone

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13
Q

What reacts with a 2 mol equivalent Grignard reagent to produce a tertiary alcohol with two groups the same?

A

Ester or acyl halide

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14
Q

What is a Grignard reagent?

A

RMgX

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15
Q

How do tertiary alcohols proceed?

A

Through Sn1 mechanism

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16
Q

How do primary alcohols proceed substitutions?

A

Sn2 mechanisms (but this is too slow)

17
Q

How do alcohols form an alkene?

A

By heating with conc. H2SO4

18
Q

What type of mechanism is tertiary alcohol to alkene?

A

E1 (2 steps)

19
Q

What type of mechanism does a primary alcohol take to form an alkene?

A

E2 (one step) mechanism

20
Q

What reagent is used to oxidise a primary alcohol to form an aldehyde or carboxylic acid, or a secondary alcohol to a ketone?

A

H2CrO4 (for carboxylic acid or ketone),

PCC for an aldehyde

21
Q

Can you oxidise tertiary alcohols?

A

No

Chem110: Term 2 (3 decks)

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