HETEROCYCLES

Heterocycles has a pay-per-view service for Non-subscribers.
You will be able to directly purchase the full text article through PayPal.
Your purchased Paper can be downloaded after the payment is completed.
An e-mail will be sent the URL to download the paper.
If you have any questions, please contact: purchase@heterocycles.com

Price: ¥ 4,400 (Yen only)
Period: This Article can be accessed for 7 days.

■ Synthesis and Properties of anti-6,15-Epithia-8,13-methanobenzo[e][14]annulene-7,14-dione, anti-5,14-Epithia-7,12-methanofuro[3,4-e][14]annulene-5,13-diones, and Their Ionic Species

Shengli Zuo, Shigeyasu Kuroda,* Mitsunori Oda,* Shin-ya Kuramoto, Yoshihiro Mizukami, Atsushi Fukuta, Yukiyasu Hirano, Teruhiko Nishikawa, Shinji Furuta, Ryuta Miyatake, Sha. I. Shaheen, Takanori Kajioka, and Mayumi Kyogoku

*Department Applied Chemistry, Faculty of Engineering, Toyama University, Gofuku 3190, Toyama 930-8555, Japan

Abstract

The sulfur bridged annulene diones fused with benzene and furan were synthesized, and their ¹H and ¹³C NMR spectra in strong acid media indicated formation of dicationic species in which the positive charges localized on the carbonyl carbons, mainly due to the unfavorable p-orbital overlap.