Nomenclature Flashcards
What is an unsaturated compound?
containting at least one pi bond
What is an acyclic compound?
linear, more or less branched scaffold
The functional group with the highest priority, will it be given as a suffix or prefix?
Suffix = functional group with highest priority
In what order do the prefixes go?
alphabetical order
- remember that multiplies (di, tri, tetra, …) are not considered for the alphabetical order
What is the suffix called when an alkane is the parent system?
suffix: -ane
If alkane group is not parent system, what is the prefix?
Prefix: -yl
What is this structure called?
3-methyl -4-propylheptane
do cyclic or acyclic have priority?
cyclic > acyclic
Name these structures
- cyclopropane
- cyclobutane
- cyclopentane
- cycloheaxane
Name this structure
Hexylcyclohexane
What rules must you think about when writing the prefixes of substituents
- alphabetical order
- lowest set of numbers used
- sidechain substituent in brackets
Name this structure
2,2,4-trimethylpentane
Name of a 3 carbon chain group
propyl
Name of a 4 carbon chain group
butyl
Name of a 5 carbon chain group
pentyl
Name of a 6 carbon chain group
hexyl
Name of a 7 carbon chain group
heptyl
Name of a 8 carbon chain group
octyl
Name of a 9 carbon chain group
nonyl
Name of a 10 carbon chain group
decyl
Is this abbreviation allowed?
Yes. methanol/ethanol can be abbreviated at the end of chains(to look nicer)
Is this abbreviation allowed?
No, we can only abbreviate alkanes at the end of chains
Name this structure
5-(2-methylpropyl)decane
What are structural isomers?
molecules with the same molecular formula, but are structuarlly ordered/bonded differently
Name the structure and its trivial name
2-methylpentane
isohexane
Give the systametic name and the trivial name
2,2 dimethylbutane
neohexane
What is this group called?
sec-butyl group
What is this group called?
isobutyl group (primary carbon)
What are alkenes?
have at least one double bond - unsaturated compound
What is the suffix for an alkene parent system?
-ene
If there is both an unsaturated chain and a saturated chain, which one is preferred for the parent system?
the unsaturared or ring has priority
Name this system
(E)-4-propyloct-2-ene
Is the system trans or cis, if it is Z
Z - zusammen
cis
what is assumed about the position of a double bond if we just write butene for example without the number?
double bond is at C1
If an alkene group is not the parent system, what is the prefix?
-enyl
Name this system
(E)-prop-1-enylcyclohexane
Name this system
3-methyleneheptane
Name this system
isoprene
What is an allylic carbon?
a carbon attached to a carbon that is in a double bond
label the Allylic and vinyl carbons
Give systematic and common (trivial) name
chloroethene
vinyl chloride
Give systematic and trivial name of this
3-bromopropene
alyll bromide
If a triple bond is in the parent chain, what is its suffix?
-yne
Name this structure
pent-2-yne /2-pentyne
Name this structure
2-ethylhex-1-yne
What does acetylene look like?
What does ethylacetyne look like?
butyne
if there is a triple bond that is not the parent system, what is the prefix?
-ynyl
Name this group
propargyl group (eg. propargyl bromide)
What does fused mean?
at least 2 cycles share one bond(bridge C numbered 1
what is the prefix/sufix of a fused compound?
prefix: bicyclic
Name thís
bicyclo[4.4.0]decane
Name this
bicyclo[4.2.0]octane
What a compound named if 2 cycles share more than one bond?
bridged bicyclic
Name this
bicyclo[2.3.1]octane
Name this
1-methylbicyclo[2.2.1]heptane
What is a polycyclic compound called, where 2 cycles share one atom?
spiro (this is also the prefix)
Name this
(Start from the right cycle because it gives lowest numbering of methyl)
2-methylspiro[4.5] decane
Name this group
Prefix: phenyl
What is this group called?
Napthyl-
Number the carbons
Name this and number the carbons
Name this structure and number the carbons
phenantrene
Name this
biphenyl
Prefix: biphenylyl
How is a partially saturated ring system indicated?
Through the sp3 center with Prefix H-
Name this compound
1 H-indene
Name this
4H-indene
What makes a compound aromatic?
Must follow Huckel’s rule:
4n+2 = pi electrons (carbons)
Name these aromatic compound
- bromobenzene
- chlorobenzene
- nitrobenzene
- ethylbenzene
What is the trivial name of this compound?
toluene
What is the trvial name of this compound?
phenol
What is the trivial name of this compound
aniline