A route to 5-substituted dibenzofurans by anionic cycloaromatization of 2-(6-substituted 3-hexen-1,5-diynyl)phenyl tert-butyldimethyl ethers and related molecules
Angew Chem Int Ed Engl. 2002 Nov 4;41(21):4077-9.
doi: 10.1002/1521-3773(20021104)41:21<4077::AID-ANIE4077>3.0.CO;2-Z.