A novel method for the synthesis of substituted naphthalenes and phenanthrenes
作者:Charles B. de Koning、Joseph P. Michael、Amanda L. Rousseau
DOI:10.1039/a908361h
日期:——
Heating of o-allyl-substituted acylbenzenes with potassium tert-butoxide in DMF with simultaneous irradiation from a high-pressure mercury lamp afforded substitutednaphthalenes, including arylnaphthalenes. 2-(o-Tolyl)-substituted aromatic aldehydes were converted into phenanthrenes under the same conditions. A formal synthesis of tanshinone I has also been achieved.
Application of intramolecular carbonyl-ene reaction towards the synthesis of idarubicinone scaffold
作者:Shyam Basak、Sutapa Ray、Dipakranjan Mal
DOI:10.24820/ark.5550190.p009.921
日期:——
facile access to the tetracyclic idarubicinone core. The required key dihydroxyanthraquinone aldehyde precursor was assembled in one step by modified Hauser annulation of a functionalized benzoquinone. Its ene reaction in the presence of SnCl4·5H2O directly led to the formation of idarubicinone core. Also described are an unprecedented thermal cascade involving a thermal ICE en route to α-naphthols, and