@article{e7f460a1471e487eb7f2e33aaacccfee,
title = "Dispiro[cyclohexane-1,1′-(1′,7′- dihydrocyclopenta[f]azulenium)-7′,1′′-cyclohexane] perchlorate, a new highly stable hydrocarbon cation",
abstract = "The title cation was synthesized from 1,6-diacetylcyclohepta-1,3,5-triene by a six-step sequence involving an aldol reaction, the Nazarov cyclization, the Shapiro reaction and hydride abstraction, and its pKR+ value was found to be 13.2, providing a new access to highly stable hydrocarbon cations.",
keywords = "Azulenes, Carbenium ions, Cyclohexanes, Spiro compounds, X-ray crystal structures",
author = "Mitsunori Oda and Hitoshi Kainuma and Ryuta Miyatake and Shigeyasu Kuroda",
note = "Funding Information: The present work is supported by the Grant-in-Aid for Scientific Research (No. 13640528) from the Ministry of Education, Culture, Sports, Science, and Technology, Japan. We also thank Mr. Takuya Uchiyama at Toyama University for the hybrid density functional calculations of the cation 4 .",
year = "2002",
month = may,
day = "6",
doi = "10.1016/S0040-4039(02)00604-4",
language = "英語",
volume = "43",
pages = "3485--3488",
journal = "Tetrahedron Letters",
issn = "0040-4039",
publisher = "Elsevier Ltd.",
number = "19",
}