18-Crown-6 → HCID 14891674, compound

Participants

Reaction Steps

Part of the isomeric mixture from (ii) (1.20 g) in dry tetrahydrofuran (50 ml) was treated with potassium fluoride (0.45 g) and 18-crown-6 ether (0.07 g). After one hour the solution was partitioned between brine and ethylacetate. The organic phase was separated, dried (Na2SO4), evaporated and chromatographed on silica gel 60 (<230 mesh) eluting with ethylacetate:hexane 6:4. This separated the trans and cis isomers of 4-allyl-3-methyl azetidin-2-one.

Provenance & Evidence