DIMERISIERUNG VON BENZOCYCLOBUTEN ZU 1-ETHYL-9,10-DIHYDROPHENANTHREN UNTER DEM EINFLUSS VON NATRIUM-KALIUM-LEGIERUNG IN TETRAHYDROFURAN

Article abstract of DOI:10.1016/S0040-4039(01)81148-5

Benzocyclobutene is cleaved by sodium-potassium alloy in THF at a C_aryl-CH₂ bond whereby in contrast to the corresponding reaction with lithium a dimeric product, 1-ethyl-9,10-dihydrophenanthrene, is formed.