343309-52-4Relevant articles and documents
BF3·Et2O-promoted cleavage of the Csp-Csp2 bond of 2-propynolphenols/anilines: Route to C2-alkenylated benzoxazoles and benzimidazoles
Song, Xian-Rong,Qiu, Yi-Feng,Song, Bo,Hao, Xin-Hua,Han, Ya-Ping,Gao, Pin,Liu, Xue-Yuan,Liang, Yong-Min
, p. 2263 - 2271 (2015)
A novel BF3·Et2O-promoted tandem reaction of easily prepared 2-propynolphenols/anilines and trimethylsilyl azide is developed to give C2-alkenylated benzoxazoles and benzimidazoles in moderate to good yields. Most reactions could be accomplished in 30 min at room temperature. This tandem process involves a Csp-Csp2 bond cleavage and a C-N bond formation. Moreover, both tertiary and secondary propargylic alcohols with diverse functional groups were tolerated under the mild conditions.
Synthesis of Organophosphorus Compounds through Copper-Catalyzed Annulation Involving C-O and C-P Bond Formations
Li, Xue-Song,Han, Ya-Ping,Zhu, Xin-Yu,Li, Ming,Wei, Wan-Xu,Liang, Yong-Min
, p. 11636 - 11643 (2017/11/10)
A novel copper(II) trifluoromethanesulfonate-catalyzed, high-efficiency, and atom-economical synthesis of valuable organophosphorus compounds via cascade annulation of propargylic alcohols with diphenylphosphine oxide is described. This protocol, which has a good functional-group compatibility and insensitivity to an ambient atmosphere, provides a simple and direct pathway to the products, organophosphorus compounds, in good yields under mild conditions. The method could be efficiently scaled up to gram scale, thus highlighting a potential application of this methodology.
Palladium-mediated intramolecular carbonylative annulation of o-alkynylphenols to synthesize benzo[b]furo[3,4-d]furan-1-ones.
Hu,Yang
, p. 1387 - 1390 (2007/10/03)
[reaction in text] The carbonylative annulation of o-alkynylphenols mediated by PdCl(2)(PPh(3))(2) and dppp in the presence of CsOAc at 55 degrees C in acetonitrile under a balloon pressure of CO generates functionalized benzo[b]furo[3,4-d]furan-1-ones in