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1

Which statement about organometallic compounds is false?
A)organometallics contain metal-carbon bonds.
B)the metal-carbon bond is highly polariz
C)they are important sources of carbon nucleophiles.
D)they are important sources of carbon electrophiles.
E)they are used to form new carbon-carbon bonds.
2

The carbon-metal bon is polarized so the?
A)metal has a d+ charge and the carbon a d- charge.
B)metal has a d- charge and the carbon a d+ charge.
3

Organolithium compounds can be prepared from all of the following but...?
A)alkyl iodides.
B)alkyl bromides.
C)alkyl chlorides.
D)alkyl fluorides.
E)10, 20, and 30 alkyl bromides.
4

Good solvents for preparing organometallic reagents include all but...?
A)pentane.
B)hexane.
C)diethyl ether.
D)THF (tetrahydrofuran, a cyclic ether).
E)water.
5

Grignard reagents are?
A)alkyl magnesium halides.
B)good sources of carbon nucleophiles.
C)generally prepared in anhydrous diethyl ether.
D)vinyl and aryl magnesium halides that are prepared in THF.
E)e. all of the above.
6

In polar protic solvents organometallic reagents react as?
A)Bronsted acids.
B)Bronsted bases.
C)Lewis acids.
D)Lewis bases.
E)an amphoteric species.
7

Grignard reagents react with carbonyl groups to produce?
A)Alkenes.
B)Alkynes.
C)Alcohols.
D)Aldehydes and Ketones.
E)Acids and their derivatives.
8

The product of the reaction of a Grignard reagent with an aldehyde is?
A)1O Alcohol.
B)2O Alcohol.
C)3O Alcohol.
D)4O Alcohol.
E)Ketone.
9

Retrosynthesis is?
A)a means to design the synthesis of a compound.
B)determining the starting material from the product.
C)achieved by breaking bonds.
D)all of the above.
E)none of the above.
10

The product of the reaction of a Grignard reagent with an ester is?
A)1O Alcohol.
B)2O Alcohol.
C)3O Alcohol.
D)4O Alcohol.
E)Ketone.
11

Organocuprates are used with?
A)1O alkyl halides to produce alkanes.
B)2O alkyl halides to produce alkanes.
C)3O alkyl halides to produce alkanes.
D)1O alkyl halides to produce alkenes.
E)1O alkyl halides to produce alkynes.
12

Vinyl and Aryl halides are reactive to organocuprates?
A)True.
B)False.
13

Which statement about iodomethylzinc iodide is false?
A)it is an organometallic reagent.
B)it reacts with alkyl halides.
C)it reacts with alkenes.
D)it is a source of a methylene nucleophile.
E)it produces a cyclopropane ring.
14

Besides the Simmons-Smith reaction the second means to generate cyclopropane rings is?
A)treating dihalomethane with an acid.
B)treating dihalomethane with a base.
C)treating trihalomethane with an acid.
D)treating trihalomethane with a base.
E)using a Grignard reagent.
15

Which statement about Transition Metals are true?
A)they accept ligands which donate electrons to the metal cation.
B)they follow the 18 electron rule.
C)they are commonly used as catalysts.
D)they can interact with the p electrons in an arene.
E)all of the above.
16

Which statement about Ziegler-Natta catalysts is false?
A)they are used in the polymerization of polyalkenes.
B)they can be used to control the stereochemistry of the reaction.
C)they consist of transition metals and/or transition metal-organic compounds.
D)they are used in the polymerization of ethylene derivatives.
E)none of the above.





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