Term
*IUPAC Names*
The IUPAC nomenclature of alkynes is similar to that for alkenes:
1. Find the longest continuous chain of carbon atoms that includes the __________ __________ and change the -ane ending of the parent alkane to __________.
2. The chain is numbered from the end closest to the __________ __________, and the position of the triple bond is designated by its __________ numbered carbon atom.
3. When additional functional groups are present, the suffixes are combined to produce the compound names of the __________ (a double bond and a triple bond), __________ (a triple bond and an alcohol), and so on.
4. The IUPAC rules give __________ higher priority than alkenes or alkynes, so the numbering begins at the end closer to an __________.
5. If the double bond and triple bond are equidistant from the ends of the chain, number the chain so that the double bond receives a (lower/higher) number than the triple bond. |
|
Definition
1A) Triple bond
1B) -yne
2A) Triple bond
2B) Lowest
3A) Alkenynes
3B) Alkynols
4A) Alcohols
4B) Alcohol
5) Lower |
|
|
Term
*Common Names*
The common names of alkynes describe them as derivatives of __________.
Most alkynes can be named as a molecule of acetylene with __________ or __________ alkyl substitutents.
This nomenclature is like the common nomenclature for __________, where we name the two alkyl groups bonded to oxygen. |
|
Definition
1) Acetylene
2) One
3) Two
4) Ethers |
|
|
Term
| A __________ __________ or a __________ __________ features an acetylenic hydrogen (H-C=C) where the triple bond comes at the end of a carbon chain. |
|
Definition
1) Terminal alkyne
2) Terminal acetylene |
|
|
Term
| If the triple bond of an alkyne is located somewhere other than the end of the carbon chain, the alkyne is called an __________ __________ or an __________ __________. |
|
Definition
1) Internal alkyne
2) Internal acetylene |
|
|
