Base-induced benzoyl migrations in Diels–Alder adducts of benzoyl-1,4-benzoquinones
作者:Raad Al-Hamdany、J. Malcolm Bruce、Ramchand T. Pardasani、Ian Watt
DOI:10.1039/c39810000171
日期:——
trans-penta-1,3-diene to substituted benzoyl-1,4-benzoquinones affords the corresponding 4a-benzoyl-4a,5,8,8a-tetrahydro-1,4-naphthoquinones which in pyridine and pyridine–methanol, undergo [1,5] and [1,2] benzoyl shifts to give 2-benzoyl-5,8-dihydro-1,4-dihydroxynaphthalenes; the effects of para-substituents in the benzoyl group on the kinetices and regiospecificity of the migration are described.