Preparation of 1-naphthols from acetylenes and o-phthalaldehyde using low-valent tantalum and niobium.
作者:Yasutaka Kataoka、Jiro Miyai、Makoto Tezuka、Kazuhiko Takai、Koichiro Oshima、Kiitiro Utimoto
DOI:10.1016/s0040-4039(00)94557-x
日期:1990.1
Tantalum (or niobium)-alkyne complexes are produced by treatment of acetylenes with the low-valent tantalum (niobium) derived by zinc reduction of TaCl5 (NbCl5). Substituted 1-naphthols are prepared regioselectively by reaction of o-phthalaldehyde with the tantalum (or niobium)-alkyne complexes in good to excellent yields.
钽(或铌)-炔烃配合物是通过用低价钽(铌)处理乙炔而制得的,该钽由铌还原TaCl 5(NbCl 5)生成。通过邻苯二甲醛与钽(或铌)-炔烃配合物的反应,可以高选择性地制备取代的1-萘酚。