A novel cyclization to a benzimidazole

✍ Scribed by M. Sprecher; D. Levy

• Book ID: 104240183
• Publisher: Elsevier Science
• Year: 1969
• Tongue: French
• Weight: 105 KB
• Volume: 10
• Category: Article
• ISSN: 0040-4039
• DOI: 10.1016/s0040-4039(01)88857-2

✦ Synopsis

The reactions of trivalent phosphorus compounds with ortho and para quinones and their derivatives present a variegated pattern of pathways which has been the subject of many recent studies, 2 but in which analogy is often a treacherous guide. We now add to this variety by reporting the novel reductive cyclixation of o_bensoquinonedibenzimide (I) by triphenylphosphine under neutral conditions at ambient temperatures.