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Oxidative Kupplung CH-acider Verbindungen mit p-Phenylendiaminen. VIII [1]. Synthese von 5H-Benzo[a]phenothiazin-5-onen aus Naphth[2,1-d]1,3-oxathiol-2-onen

✍ Scribed by Prof. Dr. G. Mann; Dr. H. Wilde; Prof. Dr. S. Hauptmann; Dr. J. Lehmann; Dr. M. Naumann; Dipl.-Chem. P. Lepom

Publisher
John Wiley and Sons
Year
1981
Tongue
English
Weight
380 KB
Volume
323
Category
Article
ISSN
1615-4150

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✦ Synopsis

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‐ones

Reaction 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.

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Oxidative Kupplung CH-acider Verbindunge
Oxidative Kupplung CH-acider Verbindungen mit p-Phenylendiaminen. VII [1]. Synthese und oxidative Kupplung von 5-Hydroxy-naphth[2,1-d]1,3-oxathiol-2-onen
✍ Prof. Dr. G. Mann; Dr. H. Wilde; Prof. Dr. S. Hauptmann; Dr. M. Naumann; Dipl.-C 📂 Article 📅 1981 🏛 John Wiley and Sons 🌐 English ⚖ 442 KB

**Oxidative Coupling of CH‐acid Compounds with p‐Phenylenediamines. VII. Synthesis and Oxidative Coupling of 5‐Hydroxy‐naphth[2,1‐d] 1,3‐oxathiol‐2‐ones** 5‐Hydroxy‐naphth[2,1‐d]1,3‐oxathiol‐2‐ones with different substituents **1**–**21** were synthesized using the following procedures: Condensatio

Oxidative Kupplung CH-acider Verbindunge
Oxidative Kupplung CH-acider Verbindungen mit p-Phenylendiaminen. V. Massenspektrometrische Fragmentierung von 4-substituierten 3-Methyl-1-phenyl-pyrazolin-5-onen
✍ Dr. H. Wilde; Doz. Dr. R. Herzschuh; Dipl.-Chem. P. Lepom; Prof. Dr. G. Mann 📂 Article 📅 1981 🏛 John Wiley and Sons 🌐 English ⚖ 253 KB

**Oxidative Coupling of CH‐acid Compounds with p‐Phenylenediamines. V. Mass Spectrometric Fragmentation of 4‐Substituted 3‐Methyl‐1‐phenyl‐pyrazolin‐5‐ones** The mass spectra of 3‐methyl‐1‐phenyl‐pyrazolin‐5‐one **1** and 4‐substituted derivatives **2–18** have been studied and the fragmentation me