Question

Organic Chemistry:

Vocabulary

I.)

In general elimination reactions will form the _ stable alkene.

a. more

b. less

This is typically the alkene with:

a. more substituents

b. less substituents.

c. cannot tell

The exception is when we have an __ mechanism with a _.

a. E1, hindered poor nucleophile

b. E1, unhindered poor nucleophile

c. E2, hindered strongly basic nucleophile

d. E2, unhindered strongly basic nucleophile

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II.) Staggered rotamers have a _________ degree torsional angle.

Nucleophiles are ___ Lewis bases.

a. always

b. sometimes

c. never

Nucleophiles are _ Bronsted-Lowry bases.

a. always

b. sometimes

c. never

Good nucleophiles generally have full or partial _ charges.

a. positive

b. negative

c. neutral

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III.)

Induction by neighboring electronegative atoms will stabilize an anion. This will be a greater effect if____. (Select all that apply)

-the neighboring atoms are MORE electronegative

-the neighboring atoms are LESS electronegative

-the electronegative atoms are FURTHER away

-the electronegative atoms are CLOSER

-there is a LARGE NUMBER of electronegative atoms

-there is a SMALL NUMBER of electronegative atoms

-the neigboring atoms are LARGER ATOMS

-the neigboring atoms are SMALLER ATOMS

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IV.) Oxidation of a primary alcohol with PCC gives a _________ functional group.

Reduction of a ketone with LiAlH4 and acid workup gives a ____________ functional group.

________________________________________________________________________________________________

V.) What is the rate law of an E2 mechanism? ________________

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VI.) Chiral carbons have ___ different groups attached.

Molecules with chiral centers are ____ optically active.

a. always

b. sometimes

c. never

Molecules that are optically active are __ chiral.

a. always

b. sometimes

c. never

Answer 1

0 Elimination generally form mogu stable alkene Alkene with more substituent is mort Stable alkene. 3 able When Strong hindered nucleophile/base is used it produces less stable alkene, because table is not to abstract the proton from hindered Site. Ed Shindered strongly basio nucleophile. o. Staggered rotamers have a 60 degree torrtional angle strar are - Nucleophiles always Lewis base. (compound which alle donate its lone pair are lewis base) Nucleophile are sometimes Bronsted lowry bases. Good muckophile generally have full partial negative charge. or 100 a)- the neighbouring atoms are Mare electronegative. the electronegative atom are closer. the neighbouring atom are smaller atoms. IS aldehyde Secondary alcohol.

Rate Low I k[ Alkyl halide] [Base] با راه diffrent groups. را۱ Sometimes ly always