Efficient AgOTf or Ph3PAuCl–AgSbF6 catalyzed cyclization of 1-hydroxy-2-alkynylallylphosphonates/2-alkynylallyl alcohols to 2-furylphosphonates/2,3,5-trisubstituted furans

Ramesh Kotikalapudi, K.C. Kumara Swamy

Tetrahedron Letters

Volume 53, Issue 30, 25 July 2012, Pages 3831–3834

http://dx.doi.org/10.1016/j.tetlet.2012.04.060