what is the IUPAC name of CH3 CH2 CH2 Br
Answers
First, you have to identify the parent chain, which is the longest linear linkage of carbin atoms. In this case, you have a chain of 3 carbon atoms thus the parent chain is propane (prop- is the rpefix to denote 3 C atoms, -aneEis the suffix because it is an alkane). Now, for the substituent, you have bromine atom. As a substituent, we use the term “bromo”. For this molecule, it is important to denote the locant (the position) of the substituent because there are 2 possible sites where Br could have been affixed - the one you have shown while the other is where the Br is attached at the middle C atom. In the structure you have given, the Br is at the 1st C (take note that it might confuse you to thinking that it is at position 3. Just remember that we can assign numbers to substituent by assigning nunbers to our C atoms from left to right or the reverse, but we opt to use the name where the locant used is of lower number). Therefore, the name of the compound is 1-bromopropane.
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