Studies on the Chemistry of 2-[3-(2-Nitrophenyl)-2-oxopropyl]benzaldehydes: Novel Syntheses of 5H-Benzo[b]carbazole-6,11-diones and Indolo[1,2-b]- isoquinoline-6,11-diones

The author’s list and contact information for this manuscript are incomplete, and should be as follows: Marcos Fernández,a Cristian O. Salas, Juan C. EstŽvez, Ramón J. EstŽvez*Departamento de Química Orgánica, Facultad de Química, Universidad de Santiago de Compostela, 15782 Santiago de Compostela, Spain.Email: [e-mail] Current address: Hospital Materno-Infantil, Xubias de Arriba s/n, 15006 A Coruńa, Spain.The results reported in this article were all carried out in the Department of Organic Chemistry at the University of Santiago­ de Compostela by a single author, Marcos Fernandez, PhD student, under the guidance and supervision of Professor­ Ramón J. EstŽvez and Professor Juan C. EstŽvez. The results were published by Dr. Marcos Fernandez without authorization of his former advisors.

The manuscript also includes incorrect content, as follows:

A. The paragraph in page 3052, column 1, stating that ”This methodology permitted the preparation of benzo[b]carbazole-6,11-dione 11a without substi­tuents, not accessible using previously developed methodology.^9b" is incorrect. This compound had been previously prepared by our research group.^¹ B. Some yields, e.g. in the transformation of compounds 10 into compounds 11, can be improved if the experiments are more accurately conducted. Thus, Dr. Fernandez reported a 24% yield for the transformation of 10a into the target compound 11a. However, this compound had been previously obtained by our research group much more efficiently (98% yield).1 On the other hand, Dr. Fernandez achieved a 22% yield for the similar transformation of 10b into 11b. We later reinvestigated this route and, as expected, 11b was obtained from 10b in excellent yield.^²

^¹ Barcia, J. C.; Cruces, J.; Estévez, J. C.; Estévez, R. J.; Castedo, L. Tetrahedron Lett. 2002, 43, 5141.

^² Compound 11b was prepared in 96% yield from 10b by Dr. Cristian O. Salas (from the Pontificia Universidad Católica of Chile), following the same procedure as for the previous preparation of 11a from 10a.

Professor Juan C. Estévez and Professor Ramón J. Estévez very much apologize to the scientific community for the scientific misconduct of Dr. Marcos Fernandez.