Base-mediated cyclization reaction of 2-alkynylphenylphosphine oxides: synthesis and photophysical properties of benzo[b]phosphole oxides.
Journal: Organic Letters
Published:
Abstract
The base-mediated intramolecular cyclization reaction of 2-alkynylphenylphosphine oxides affords benzo[ b]phosphole oxides, which show intense blue-green fluorescence. Benzo[ b]phospholes are also prepared by the reduction of benzo[ b]phosphole oxides.
Authors
Takanobu Sanji, Kentaro Shiraishi, Taigo Kashiwabara, Masato Tanaka