… Semihollow??Shaped Triethynylphosphane Ligand for Efficient Formation of Six??and Seven??Membered Ring Ethers through Gold (I)??Catalyzed Cyclization of Hydroxy …

…, A Harada, H Ohmiya, M Sawamura

文献索引：Ito, Hideto; Harada, Ayumi; Ohmiya, Hirohisa; Sawamura, Masaya Advanced Synthesis and Catalysis, 2013 , vol. 355, # 4 p. 647 - 652

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被引用次数: 5

摘要

Abstract The formation of six-and seven-membered ring ethers from hydroxy-tethered propargylic esters was efficiently catalyzed by a cationic gold (I) complex with a semihollow- shaped triethynylphosphane ligand. This gold catalysis showed a tolerance toward the reactions of primary, secondary, and tertiary alcohol substrates with various substitution patterns. A sterically congested 2, 2, 6, 6-tetraalkyl-substituted tetrahydropyran derivative ...