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Organic Chemistry Il > Alkynes > Flashcards

Alkynes Flashcards

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1
Q

What are alkynes ?

A

Hydrocarbons that contain carbon-carbon triple bonds

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2
Q

What are alkynes also called?

A

Acetylenes

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3
Q

Are alkynes common in nature?

A

Not as common as alkenes

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4
Q

What do plants use to protect themselves?

A

Alkynes

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5
Q

What is cicutoxin ?

A

A toxic compound found in water hemlock, and capillin protects a plant against fungal disease

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6
Q

Which functional group is uncommon in drugs?

A

Alkyne

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7
Q

What is parsalmide?

A

Used as analgesic

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8
Q

What is ethynyl estradiol?

A

Common ingredient in birth control pills

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9
Q

What is dynemicin A?

A

Antibacterial compound that is being tested as an antitumor agent

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10
Q

What is the shape of alkyne ?

A

Linear, sp hybridized

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11
Q

In alkynes the triple bond is made of what?

A

One sigma bond and two pi bonds

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12
Q

How can most alkynes can be named?

A

Acetylene with one or two alkyl substituents

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13
Q

What is terminal alkyne ?

A

Triple bond comes at the end of a carbon chain

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14
Q

What is internal alkyne ?

A

The triple bond is located somewhere other than the end of the carbon chain

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15
Q

What is the most commercial alkyne ?

A

Acetylene

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16
Q

What is the largest use of acetylene ?

A

Fuel for the oxyacetylene welding torch

17
Q

What are characteristics of acetylene?

A

Colorless, foul-smelling gas that burns in air with a yellow, sooty flame

18
Q

What happens when the acetylene flame is supplied with pure oxygen?

A

The color turns to light blue, and the flame temperature increases

19
Q

What is acetylene made from?

A

Coal or natural gas

20
Q

What is the process of manufacturing acetylene from coal?

A

Heating lime and coke in an electric furnace to produce calcium carbide to which water is added forming acetylene and hydrated lime

21
Q

Which is the most acidic hydrocarbon?

A

Terminal alkynes

22
Q

What is acetylide ion ?

A

A strong base and a powerful nucleophile
It can displace a halide ion from a suitable substrate, giving a substituted acetylene

23
Q

What is the application of acetylide ion?

A
24
Q

What is the characteristic of ethchlorvynol

A

Organic Chemistry Il (12 decks)

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