科研之友
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摘要
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 alpha-quinoxalinyl triphenylphosphoranes in good to excellent yields.
- 出版日期2007-2-12
