Selective and Efficient Cycloisomerization of Alkynols Catalyzed by a New Ruthenium Complex with a Tetradentate Nitrogen–Phosphorus Mixed Ligand

…, TB Wen, HHY Sung, ID Williams, G Jia

Index: Liu, Fei Nian; Su, Fu Hai; Wen, Ting Bin; Sung, Herman H.-Y.; Williams, Ian D.; Jia, Guochen Chemistry - A European Journal, 2010 , vol. 16, # 26 p. 7889 - 7897

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Citation Number: 33

Abstract

Abstract The new ruthenium complex [Ru (N 3 P)(OAc)][BPh 4](4), in which N 3 P is the N, P mixed tetradentate ligand N, N-bis [(pyridin-2-yl) methyl]-[2-(diphenylphosphino) phenyl] methanamine was synthesized. The complex was found to be catalytically active for the endo cycloisomerization of alkynols. The catalytic reactions can be used to synthesize five-, six-, and seven-membered endo-cyclic enol ethers in good to excellent yields. A catalytic ...