N. Asao, Menggenbateer, Y. Seya, Y. Yamamoto, M.W. Chen, W. Zhang, A. Inoue,  Synlett, 23 (2012), 66-C69.

 

abstract

 

Nanoporous gold material exhibits a catalytic activity on the benzannulation reaction between ortho-alkynylbenzaldehydes and alkynes. The catalyst is easily recoverable and can be reused several times without leaching and loss of activity