oxabicyclic en · ADJ
Etymology
From oxa- + bicyclic.
Meanings
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(not-comparable) Describing a bicyclic compound having a bridging oxygen atom.
These oxabicyclic systems are very versatile intermediates in organic synthesis and have been prepared typically in racemic form by the [3 + 4] annulation between allyl cations and furans.
Aldrichimica Acta Volume 30 No 4 (pdf) from Sigma-Aldrich