The dienone–phenol rearrangement. Synthesis of spiro[4.5]dec-7-ene-6,9-dione
Abstract
Spiro[4.5]dec-7-ene-6,9-dione (II) has been synthesized and identified as one component of the mixture formed on rearrangement of 6-hydroxybicyclo[4.4.0]deca-1,4-dien-3-one catalysed by boron trifluoride–ether complex.