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Orgo 320
Test 3
42
Chemistry
Undergraduate 1
03/15/2011

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Term
Reduction of aldehydes produce this.
Definition
Primary Alcohols
Term
Ketones are reduces to give this
Definition
Secondary alcohols
Term
Esters are reduced to give
Definition
Primary alcohols
Term
Carboxylic acids are reduced to give
Definition
primary alcohols
Term
To reduce aldehydes and ketones but not carboxylic acids or esters I would use what reagent?
Definition
NaBH4
Term
To reduce aldehydes, and ketones, as well as esters and carboxylic acids I would use what reagent?
Definition
LiAlH4
Term
LiAlH4 will add how many H's to esters and carboxylic acids?
Definition
2
Term
Grignard Reactions are especially reactive with what?
Definition
Water and Alcohols
Term
Grignard reactions with formaldehyde(CH20) yields what?
Definition
primary alcohols
Term
Grignard reactions with aldehydes yield what?
Definition
secondary alcohols
Term
Grignard reactions with ketones yield what?
Definition
Tertiary alcohols
Term

Esters react with Grignard reagents to yield what?

(Be specific about where the substituents came from)

Definition
Tertiary alcohols in which two of the substituents bonded to the hydroxyl bearing carbon have come from the Grignard reagent. 
Term
Dehydrations mean what?
Definition
That water is eliminated. 
Term
Dehydration produces?
Definition
alkenes
Term
To dehydrate secondary and tertiary alcohols use?
Definition
A strong acid like H2SO4
Term
Oxidation of alcohols yields what?
Definition
carbonyls
Term
An oxidation reaction that ends in an aldehyde or a carboxylic acid had to come from what kind of alcohol?
Definition
Primary
Term
Oxidation of secondary alcohols yields what?
Definition
ketones
Term
Oxidation of a tertiary alcohol yields what?
Definition
NO RXN
Term
What reagent would we use to prepare an ONLY an aldehyde fron and alcohol, and what type of alcohol would we be using?
Definition
Aldehydes come from primary alcohols and if we wanted to isolate the aldehyde we would use PCC.
Term
What reagent would we use for preparing a carboxylic acid from an alcohol and what type of alcohol would we be using?
Definition
Primary alcohol and the reagent would be CrO3 or Na2Cr2O7
Term
What reagents would we use to prepare a ketone from an alcohol using oxidation and what type of alcohol would we have started with?
Definition
Secondary alcohols are oxidized to yield ketones and we would use CrO3 or Na2Cr2O7
Term
Aryl
Definition
Aromatic substituent
Term
These are ALWAYS unreactive in Sn1 and Sn2
Definition
Vinylic and arylic
Term
If there are 9H singlets what does that tell me about the structure of the molecule?
Definition
Tert butyl is present
Term
Williamson did what reaction?
Definition
Ether synthesis
Term
What is a thiol?
Definition
SH
Term
What is an epoxide?
Definition
Ether in a 3 membered ring
Term
Vinylic
Definition
On the double bond
Term
allylic
Definition
position next to the double bond
Term
Z rule
Definition
Yield the more highly substituted alkene as major.
Term
1700 IR
Definition
Carbonyl
Term
UV active means what?
Definition
conjugated
Term
What is unique about identical neighboring atoms in NMR.
Definition
They don't split. Twins don't date.
Term
If something is more conjugated what does that mean about the UV?
Definition
It's higher
Term
6H doublet and 1 multiplet
Definition
Isopropyl
Term
2900-3300 IR
Definition
C-H
Term
3000-4000 IR
Definition
O-H
Term
What does addition of H-X do to an alkene?
Definition
It breaks the double bond and adds the X
Term
What does addition of X2 do to an alkene?
Definition
It breaks the double bond and adds anti X's
Term
What type of alcohols work best with HX reactions?
Definition
Tertiary
Term
1640-1680
Definition
C=C
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