Assertion: ring expansion | /r/HasProperty | useful
Facets:
value: for making large rings
type: PURPOSE
Source sentences:
text: The Buchner ring expansion is useful because it gives cycloheptatrienes as the ring opened products, which are found in the core of some natural products, such as azulenes.
text: The Dowd-Beckwith ring expansion is also capable of adding several carbons to a ring at a time,e of adding several carbons to a ring at a time, and is a useful tool for making large rings.