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The Staudinger reaction of imines derived from 7-oxanorbornenone with 2-alkoxyacetyl chlorides afforded spiro-β-lactams albeit with an unexpected stereochemistry. This was not the case with arylacetic acid chlorides, which gave rise to spiranic oxazinone rings as well as the expected β-lactams.
Domino metathesis of allyl- and propargyl-(2-endo-7-oxanorborn-5-enyl) ethers with allyl acetate in the presence of Grubbs’ ruthenium catalyst affords stereoselectively substituted cis-fused bicyclic ethers (2,6-dioxabicyclo[4.3.0]non-8-enes).