Now I'm following steps as drawn below, and I have a mass spectrum of my product. However, I'm confused about the result. The following is my understanding of it:
1. No M
+/M
2+peaks have equal heights, which means no Br.
2. If m/z=447 is molecular ion, the percentage of m/z=448 is 7.12, that means this compound has 6 or 7 carbons. But as m.w=447 with only 6~7 carbons, I think it's not reasonable.
3. If m/z=149 is molecular ion, with 13.67% of M
+, it could contain 12 carbons, then 149-12*12=5, still not reasonable.
Here's the mass spectrum:
http://imgur.com/qvKhmOJSo, do I misunderstand something?