Synthesis of Benzo[b]fluorenone Nuclei of Stealthins
Joint Authors
De, Saroj Ranjan
Ghorai, Sujit Kumar
Hazra, Nirmal Kumar
Mal, Dipakranjan
Karmakar, Raju
Source
Research Letters in Organic Chemistry
Issue
Vol. 2009, Issue 2009 (31 Dec. 2009), pp.1-5, 5 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2009-03-24
Country of Publication
Egypt
No. of Pages
5
Main Subjects
Abstract EN
Two routes, one based on a Michael-initiated aldol condensation and the other on an intramoleculer carbonyl-ene reaction, have been found to be feasible for an entry to benzo[b]fluorenones.
Reaction of 4,9-dimethoxybenz[f]indenone with nitromethane in the presence of DBU gave the corresponding Michael adduct, which afforded 2-methyl-5,10-dimethoxybenzo[b]fluorenone on reaction with methacrolein under a variety of basic conditions.
Similarly, 2-methallyl-4,9-dimethoxybenz[f]indenone reacted with nitromethane to give the corresponding Michael adduct, Nef reaction of which furnished 3-formyl-2-methyl-4,9-dimethoxybenz[f]indanone.
This underwent ene-cyclization under the influence of SnCl4.
5H2O, and yielded 2-methyl-5,10-dimethoxybenzo[b]fluorenone.
American Psychological Association (APA)
Ghorai, Sujit Kumar& De, Saroj Ranjan& Karmakar, Raju& Hazra, Nirmal Kumar& Mal, Dipakranjan. 2009. Synthesis of Benzo[b]fluorenone Nuclei of Stealthins. Research Letters in Organic Chemistry،Vol. 2009, no. 2009, pp.1-5.
https://search.emarefa.net/detail/BIM-478855
Modern Language Association (MLA)
Ghorai, Sujit Kumar…[et al.]. Synthesis of Benzo[b]fluorenone Nuclei of Stealthins. Research Letters in Organic Chemistry No. 2009 (2009), pp.1-5.
https://search.emarefa.net/detail/BIM-478855
American Medical Association (AMA)
Ghorai, Sujit Kumar& De, Saroj Ranjan& Karmakar, Raju& Hazra, Nirmal Kumar& Mal, Dipakranjan. Synthesis of Benzo[b]fluorenone Nuclei of Stealthins. Research Letters in Organic Chemistry. 2009. Vol. 2009, no. 2009, pp.1-5.
https://search.emarefa.net/detail/BIM-478855
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-478855