25383-05-5 → HCID 12985179, compound

Participants

Reaction Steps

(1)-1 Di-tert.-butyl cis-1-propenylphosphonate (15.0 g.) was added to a solution of potassium tert.-butoxide in tert.-butyl alcohol (K: 250 mg., tert.-C4H9OH: 150 ml.) and then the mixture was stirred for 6 hours at 55°-60° C. The resultant mixture was concentrated under reduced pressure and the residue was shaken with a mixture of ethyl acetate (400 ml.) and ice-water (100 ml.). The ethyl acetate layer was separated, washed with water (50 ml.), dried over magnesium sulfate and evaporated to dryness under reduced pressure to give oily residue (13.34 g.), which was distilled under reduced pressure to give oily di-tert.-butyl trans-1-propenylphosphonate (12 g.), b.p. 78°-80° C./2 mmHg.

Provenance & Evidence