Reductive coupling of N-methoxycarbonyl lactams with benzophenone and 9-fluorenone by low-valent titanium

…, Y Takenaga, Y Ishikawa, Y Morikami, T Sakurai

文献索引：Kise, Naoki; Takenaga, Yosei; Ishikawa, Yohei; Morikami, Yoichi; Sakurai, Toshihiko Tetrahedron Letters, 2012 , vol. 53, # 15 p. 1940 - 1945

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被引用次数: 6

摘要

The reductive coupling of N-methoxycarbonyl lactams with benzophenone by Zn-TiCl4 in THF gave cross-coupled products as cyclic α-diphenylidene-N-methoxycarbonylamines and ring-opening α, α-diphenyl-α-hydroxy-ω-(N-methoxycarbonyl) amino ketones selectively depending on the reduction conditions. The reductive coupling of N-methoxycarbonyl lactams with 9-fluorenone by Zn-TiCl4 gave cyclic α-(9H-fluoren-9-ylidene)-N- ...