Stable-Ion NMR and GIAO-DFT Study of the Carbocations from Benzofluorenes and Dibenzofluorenes; Synthesis of Nitro Derivatives; Mutagenicity Assay and X-ray Analysis
作者:Kenneth K. Laali、Takao Okazaki、Fatima Sultana、Scott D. Bunge、Bimal K. Banik、Carol Swartz
DOI:10.1002/ejoc.200701066
日期:2008.4
examples of stable carbocations are reported from 7H-benzo[c]fluorene (2), 11H-benzo[b]fluorene (3), 11H-benzo[a]fluorene (4), 2-methoxy- (5), 7-methoxy- (6), and 9-methoxy-11H-benzo[a]fluorene (7), 7H-dibenzo[c,g]fluorene (8), 13H-dibenzo[a,g]fluorene (9), 2-methoxy-13H-dibenzo[a,g]fluorene (10) and 5,6-dihydro-13H-dibenzo[a,g]fluorene (11). Charge-delocalization modes in the resulting carbocations