Conductive Salts of Tropylium Ions with Tetracyanoquinodimethan Anion Radical (TCNQ<sup>\ewdot</sup>) and Bisthiadiazolotetracyanoquinodimethan Anion Radical (BTDA–TCNQ<sup>\ewdot</sup>)
Tropylium ions have been found to be good cations for forming highly conductive salts of TCNQ\ewdot. Tropylium ions with different reduction potentials were prepared. The first reduction potentials which are correlated with the substituent constants σp+ control the formation of the salts. The cations with higher reduction potentials underwent a reaction with TCNQ\ewdot to give neutral TCNQ and coupling
Novel Intermolecular Heterocycle Exchange Reaction of Cyclohepta[<i>b</i>][1,4]benzoxazines and Their<i>S</i>-Analogs with 1,2-Bifunctional Reagents
作者:Tetsuo Nozoe、Kimio Shindo、Sumio Ishikawa
DOI:10.1246/cl.1988.1593
日期:1988.10.5
The benzoxazine and the benzothiazine moieties of cyclohepta[b][1,4]benzoxazines and their S-analogs were easily exchanged with o-aminobenzenethiol, o-phenylenediamine and other related 1,2-bifunctional reagents in ethanol. The exchange of the two fused heterocycles of a tropylium compound is also described.
NOZOE, TETSUO;SHINDO, KIMIO;ISHIKAWA, SUMIO, CHEM. LETT.,(1988) N 10, C. 1593-1596
作者:NOZOE, TETSUO、SHINDO, KIMIO、ISHIKAWA, SUMIO
DOI:——
日期:——
Cyclohepta[<i>b</i>][1,4]benzothiazines and Their Diazine Analogues. 1. Formation and Reactions of Cyclohepta[<i>b</i>][1,4]benzothiazines
作者:Kimio Shindo、Sumio Ishikawa、Tetsuo Nozoe
DOI:10.1246/bcsj.58.165
日期:1985.1
title benzothiazine (9). Although 9 was stable under basic conditions, its N-methyl cation reversibly afforded the ring-opened 2-[o-(methylamino)phenylthio]tropone in alkali. Oxidation of 9 with hydrogen peroxide in methanol underwent a rearrangement reaction to afford (exclusively) phenothiazine and its 1-formyl derivative. A similar H2O2 oxidation of 10-methoxycyclohepta[b][1,4]benzothiazine gave