Photo-Fries Rearrangement of Carbazol-2-yl Sulfonates: Efficient Tool for the Introduction of Sulfonyl Groups into Polycyclic Aromatic Compounds
作者:Laura K. Crevatín、Sergio M. Bonesi、Rosa Erra-Balsells
DOI:10.1002/hlca.200690112
日期:2006.6
Systematic studies on the photo-Fries rearrangement of different 9H-carbazol-2-yl sulfonates 2 have shown that this type of conversion can be readily used for the preparative-scale introduction of alkyl- or arylsulfonyl groups into polycyclic aromaticcompounds under very mild conditions. A series of new 1-sulfonyl- (3) or 3-sulfonyl-9H-carbazoles (4) were prepared in medium-to-good yields, and characterized