Tetrahedron

1, 1-Ethylene-1H-azulenium ion and its alkyl substituted derivatives: Synthesis, characterization, and some reactions thereof

M Oda, T Kajioka, T Uchiyama, K Nagara, T Okujima…

Index: Oda, Mitsunori; Kajioka, Takanori; Uchiyama, Takuya; Nagara, Kohki; Okujima, Tetsuo; Ito, Shunji; Morita, Noboru; Sato, Toshio; Miyatake, Ryuta; Kuroda, Shigeyasu Tetrahedron, 1999 , vol. 55, # 19 p. 6081 - 6096

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Citation Number: 11

Abstract

1, 1-Ethylene-1H-azulenium tetrafluoroborate (1b) and its alkyl substituted derivatives, 6-t- butyl (1c) and 4-isopropyl-3, 8-dimethyl ones (1d), were synthesized starting from their corresponding azulenes by a three-step sequence which includes reduction, cyclopropanation and hydride abstraction reactions. The cation 1 b and its 6-t-butyl derivative 1c, generated in deuterated acetonitrile at− 20° C, were characterized by low- ...