ISSN:
0021-8383
Keywords:
Chemistry
;
Organic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Oxidative Coupling of CH-acid Compounds with p-Phenylenediamines. VIII. Synthesis of 5H-Benzo[a]phenothiazin-5-ones from Naphth[2,1-d]1,3-oxathiol-2-onesReaction of 5-hydroxynaphth[2,1-d]1,3-oxathiol-2-ones with N,N-diethyl-quinone-1,4-diimine leads to 5H-benzo[a]phenothiazin-5-ones 1-21. The same dyes are available by use of p-substituted nitrosobenzenes in acetic acid, or in methanol in the presence of oxygen acceptors. The mechanisms of dye formation are discussed.
Additional Material:
2 Tab.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/prac.19813230510