| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5284134 | Tetrahedron Letters | 2007 | 4 Pages |
Abstract
The reactive 1:1 zwitterionic intermediate formed by the addition of triphenylphosphine to diaroylacetylenes was trapped with 1,2-benzenediamines to produce triphenylphosphorane intermediates. Intramolecular cyclization and subsequent oxidation of the intermediate afforded functionalized α-quinoxalinyl triphenylphosphoranes in good to excellent yields.
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Authors
Mehdi Adib, Esmaeil Sheibani, Alireza Abbasi, Hamid Reza Bijanzadeh,