Synthetic investigation for spiro-junctioned biradical compounds

Kana Ichihashi, Masaki Okamura, Takuya Kanetomo, Takayuki Ishida

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Biradical compounds are expected as promising building blocks for molecular magnetic materials, especially when they have a ground triplet state. We focused on spiro-junctioned D2d biradicals, 9,9'(10H,10H')-spirobiacridine-10,10'-dioxyls. tert-Butylation would suppress intermolecular interaction and facilitate analysis on the intramolecular exchange coupling. During attempted preparation of a precursory diamine 2,2',7,7'-tetra-tert-butyl-9,9'(10H,10'H)-spirobiacridine, 2,7-di-tert-butyl-9-{3-tert-butyl-6-(4-tert-butylphenylamino)phenyl}acridine was isolated as an isomeric byproduct and characterized by means of spectroscopic methods including 2D NMR. Fast aromatization is assumed to occur before intramolecular Friedel-Crafts cyclization.

Original languageEnglish
Title of host publicationIrago Conference 2018
Subtitle of host publicationA 360-Degree Outlook on Critical Scientific and Technological Challenges for a Sustainable Society
EditorsAdarsh Sandhu, Masumi Taki, Tetsuo Kishimoto, Jaiyam Sharma
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735417953
DOIs
Publication statusPublished - 24 Jan 2019
Event8th Irago Conference 2018: A 360-Degree Outlook on Critical Scientific and Technological Challenges for a Sustainable Society - Tokyo, Japan
Duration: 1 Nov 2018 → …

Publication series

NameAIP Conference Proceedings
Volume2067
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference8th Irago Conference 2018: A 360-Degree Outlook on Critical Scientific and Technological Challenges for a Sustainable Society
CountryJapan
CityTokyo
Period1/11/18 → …

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