Organic Chemistry Flashcards

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1
Q

Units of Unsaturation

A
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2
Q

Type of bond between Mg and Nitrogens

A

Coordinate Covalent Bond

Ligand donates lone pair e, metal donates empty orbitals

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3
Q

Tertiary Amine

A
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4
Q

Amide

A
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5
Q

How man electrons does the N atoms contribute to the pi bond?

A

1 e for sigma bond

2 e for pi bond

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6
Q

The overlap of what two orbitals form the pi bond between carbon atoms in an alkene

A

two p orbitals

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7
Q

Most strong intermolecular bond

A

H-bond

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8
Q

Epimer

A

Different at just 1 carbon

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9
Q

How many carbon-carbond bonds in the structure shown below have conformers?

A

2, double bonds rotate, but sigma bonds can

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10
Q

E Z Geometrical Isomer priority

A

Atomic number

Tertiary carbons>2>1

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11
Q

(l) rotates…

A

clockwise

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12
Q

(d) rotates…

another name for (d)-carvone….

A

(d) rotates clockwise
(d) carvone=(+) carvone

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13
Q

What is the relationship between (+) and (-)

A

enantiomers

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14
Q

Meso Compound example

A

1,2, cis di bromo cyclo pentane

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15
Q

Enantiomer Definition

A

Non-superimposable

Mirror Image

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16
Q

Resolution process

A

A process that seperates enantiomers using a chiral column

17
Q

What type of carbon would be most reactive in a radical reaction

Least reactive?

A

3 Tertiary - just has 1 hydrogen

Tertiary won’t react because there are no Hydrogens to pull off

18
Q

Monohalogenation rules

A

I is selective

Br is selective, only tertiary carbons

Cl is not selective

F are reactive, not selective, so any type of carbon works. In fact, if there are 2 primary carbons (CH3) and one secondary carbon (CH2), you’ll see more F on primary carbons

19
Q

Given than benzene molecules with symmetry pack better in a crystalline structure raising the melting point, which of the following would have the greatest melting point?

ortho, para, or meta dichlorobenzene

A

Para has 2 axis of symmetry, ortho and meta has only one. Para dichlorobenzene will have the greatest melting point

20
Q

Electron donating groups

A

Can be recognized by the lone pairs on the atom atjacent to the p system

OMe, NH2, OH, OR,

Weakly activating: -CH=CR2

Activate: Ortho, Para

Adds e- density=makes it more nucleophilic

21
Q

Electron Withdrawing

A

Can be recognized either by adjacent atom to the p system having several bonds to more electronegatie atoms OR having a formal + charge

Deactivating groups direct META

EXCEPT Halogens, which deactivate but direct ORTHO, PARA

Removes e- density=makes it less nucleophilic

NO2

22
Q

When does a hydride shift occur?

A

It occurs when the carbocation formed is primary and there is the ability to shift to a more stable secondary or tertiary carbocation.

23
Q

What happens when an alcohol is treated with sulfuric acid?

A

OH becomes protonated

H2O leaves, creating carbocation

H from adjacent carbon pulls off to donate e-, creating ALKENE

24
Q

Alkene + HBr rules

A

Markovnikov

Br- on most stable carbocation

25
Q

Alkene–>Alcohol

A

dilute acid and cold conditions

water in acid provides hydroxyl group

=Hydration

26
Q

What is the purpose of FeBr3 in the aromatic substitution of Br

A

Activates Br2 so electrons in benzene can attack the electrophile

Similar for AlCl3

27
Q

Friedal Crafts Acylation is an…

A

Substitution Reaction

Ketyl group substitutes for a Hydrogen on aromatic ring.

Aromatic Substitution Reaction

28
Q

Sn1 Reaction

A

Carbocation intermediate is formed

Mechanism has two steps

[electrohile] dependent

29
Q

What is the purpose of the ZnCl2 in the Lucas Reagent

A

To activate the alcohol and make it a better leaving group

30
Q

In reactions, if the carbocation can be stabilized, like by rings…

A

Would be a faster rate