lab 1-quiz 1

Question 1

synthesis of

Answer 1

cis-4-cyclohexene-1,2-dicarboxylic anhydride

Question 2

The Diels-Alder reaction

Answer 2

construction of carbon-carbon bonds. it affords measure of regiochemical and stereochemical control.

Question 3

this experiment will focus on

Answer 3

issue of stereochemical control as it relates to the synthesis of cis-fused bicyclic compounds.

Question 4

why was a 3-sulfolene used instead of using 1,3-butadiene directly?

Answer 4

1,3-butadiene is a gas at room temp, so we use 3-sulfolene instead, a solid.

Question 5

why was a calcium chloride drying tube used?

Answer 5

it is a dehydrating agent, so it keeps the reaction water free. avoids getting a different product.

Question 6

draw mechanism

Answer 6

in lab manual

Question 7

does product have chiral carbons?

Answer 7

yes two carbons

Question 8

is the product optically active?

Answer 8

optically inactive, plane of symmetry.

Question 9

safety

Answer 9

3-sulfolene is an irritant.

Question 10

induce crystallization by

Answer 10

scratching inside beaker w spatula

Question 11

the pipet should be pre warmed w hot xylenes

Answer 11

so that the product will not crystalize in the pipet