Chem 212 Quiz 2e p.1
NAME__________________________________
1.
(6pts) Draw structures for two different aldehydes with the formula C
8
H
16
O. You may draw a line-bond structure; if you draw each carbon as “C” you must draw each hydrogen.
[2(8) + 2 - 16]/2 = 1, and an aldehyde has a C=O which must be the only unsaturation in the structure. There are many possible answers.
O
O
2.
(4 pts) Underneath the structure, write the name of each of the following:
CH
3
Cl
H
3
C
H
3
C
H
3
C
CH
3 trans -1-chloro-2-isopropylcyclobutane
H
3
C
8-ethyl-3-methyldodecane
3.
(4 pts) Describe the relationship between each of the following pairs of structures as one of the following: identical, cis-trans isomers, constitutional isomers, or different compounds.
CH
3
CH
3
CH
3 and
Constitutional
CH
3 H
3
C CH
3
H
3
C CH
3 and
Different compounds
CH
3
H
3
C CH
3
(i.e. not related)
\
4.
(6 pts) Write line-angle formulas (i.e. structures similar to those shown for problems 1 & 2 above) for the following alkanes and cycloalkanes. You may need to add wedges and/or dashes to the structures.
Your answer must be a line angle formula to receive credit!
a.
cis -1,4-Dimethylcyclohexane
H
3
C
CH
3 b.
2,2,3,3-Tetramethyldecane c.
3-t-Butyl-6,6-diethylnonane