Table 15.
DBU-catalyzed isomerization−dehydration of saturated fulvene endoperoxides 275 to form 2-vinyl-2-cyclopentenones 277.
 | ||
| Endoperoxide | Cyclopentenone | Yield, % |
 275a |
 277a |
76 |
 275b |
 277b |
83 |
 275c |
 277c |
82 |
 275d |
 277d |
68 |
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