2910-67-0
3-(cyclopenten-1-yl)propanoic acid
→
~61%
86971-90-6
1-oxaspiro[4.4]non-8-en-2-one
920760-26-5
3-(3-oxocyclopenten-1-yl)propanoic acid
~40%
344748-47-6
6-bromo-1-oxaspiro[4.4]nonan-2-one