[–] xmcqdpt2 4y ago ↗ Is the interest here that the molecule has a double bond in a three-membered ring?It's pretty strained but far from the weirdest cyclic systems.There are some cycloallenes with two sequential double bonds,https://pubs.rsc.org/en/content/articlelanding/2015/qo/c5qo0...You can also get triple bonds in a large enough ringhttps://en.m.wikipedia.org/wiki/Cycloalkyne
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[ 110 ms ] story [ 1696 ms ] threadIt's pretty strained but far from the weirdest cyclic systems.
There are some cycloallenes with two sequential double bonds,
https://pubs.rsc.org/en/content/articlelanding/2015/qo/c5qo0...
You can also get triple bonds in a large enough ring
https://en.m.wikipedia.org/wiki/Cycloalkyne