chapter 7 Flashcards
what are olefins?
another name for alkenes
what does a carbon-carbon double bond consist of
stable sigma bond and less stable pi bond
unsaturated
capable of adding hydrogen in presence of catalyst
saturated
cannot react with anymore hydrogen
alkane formula
CnH2n+2
alkene or ring formula
CnH2n
formula for degrees of unsaturation
2C + 2 + N - X - H / 2
compound with 2 double bonds =
diene
compound with 3 double bonds =
triene
compound with 4 double bonds =
tetraene
vinyl group
–CH=CH2
allyl group
–CH2–CH=CH2
organic compound produced in the largest volume
ethylene
do boiling points of alkenes increase or decrease with increasing molecular weight
increase
does increased branching of alkenes lead to a higher or lower boiling point
lower
Zaitsev’s rule
alkenes with more highly substituted double bonds are usually more stable
Zaitsev’s product
more substituted alkene
rings that are _____-membered rings or larger can easily accommodate double bonds
five
once a cycloalkane contains at least ____ or more carbon atoms, it can accommodate a trans double bond
8
Bredt’s rule
a bridge bicyclic compound can’t have a double bond at a bridgehead position unless one of the rings contains at least 8 carbons
conjugated double bonds
double bonds that can interact with each other because they are separated by just one single bond
what is the extra stability of the conjugated double bond created by
resonance energy
what does E1 stand for
elimination, unimolecular
the rate limiting transition state of E1 mechanism involves a _______ molecule
single
