Journal of Molecular Catalysis A-Chemical, Vol.164, No.1-2, 165-171, 2000
Rhodium(II) catalysed decomposition of 3-diazo-4-hydroxycoumarin - An easy access to furocoumarin ring system
Several furo[3,2-c]counmarins are produced efficiently and regioselectively by a formal [3+2] cycloaddition of 3-diazo-4-hydroxycoumarin and oxygenated alkenes, presumably via the intermediacy of rhodium carbenoid.