Novel synthetic route to octasubstituted naphthalenes from four alkynes and one olefin unit via zirconacyclopentadienes and 1, 2-diiodo-3, 4, 5, 6-tetraalkylbenzene

…, K Kanno, K Nakajima, T Takahashi

Index: Takahashi, Tamotsu; Li, Yanzhong; Stepnicka, Petr; Kitamura, Masanori; Liu, Yanjun; Nakajima, Kiyohiko; Kotora, Martin Journal of the American Chemical Society, 2002 , vol. 124, # 4 p. 576 - 582

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Citation Number: 14

Abstract

1, 2, 3, 4-Tetrasubstituted benzene derivatives were prepared by the reaction of zirconacyclopentadienes with vinyl bromide in the presence of NiCl2 (PPh3) 2. 1, 2-Diiodo- 3, 4, 5, 6-tetraalkylbenzenes were formed by treatment of 1, 2, 3, 4-tetraalkylbenzenes with iodine and periodic acid in the presence of a catalytic amount of sulfuric acid. Reaction of the 1, 2-diiodo-3, 4, 5, 6-tetraalkylbenzenes with zirconacyclopentadienes in the presence ...