You're on a good track.
7. Consider that R-O-CH
3 is a functional group called methoxy. You can also go the common name route of treating it as an ether as in 9
9. Speaking of 9 (even though you didn't mention it), don't forget to specify where the oxygen in an ether group attaches to its substituents. If you don't specify, the 1 position is automatically assumed. Prefixes like
sec-,
tert- and iso are useful in these situations.
11. Try naming the compound as an amine. For example,
dimethylamine. When you have more than one type of substituent though, precede it with "
N-" to reduce confusion. The
N- signifies the point of attachment is on the nitrogen.
12. don't forget to add prefixes to a substituent to indicate its quantity!
Hope that helps!