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Synthèses dans la série des bis-indéno-fluorènes, IX. Le dihydro-13,15-7H-bis-indéno[2.1-b; 2′.1′-h]fluorène et son dérivé méthylé en position 6

✍ Scribed by Louis Chardonnens; Jean-Luc Barras

Publisher
John Wiley and Sons
Year
1974
Tongue
German
Weight
440 KB
Volume
57
Category
Article
ISSN
0018-019X

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✦ Synopsis

Abstract

By condensation according Ullmann of 2‐iodo‐9‐oxo‐fluorene with 3‐bromo‐2‐cyano‐9‐oxo‐fluorene, followed by cyclisation and reduction, the new linear 13,15‐dihydro‐7H‐diindeno[2.1‐b; 2′.1′‐h]fluorene (III) is synthesized in 3 steps. The 6‐methyl‐derivative of II is also obtained in a similar way.

📜 SIMILAR VOLUMES

Synthèses dans la série des bis-indéno-f
Synthèses dans la série des bis-indéno-fluorènes, VIII. Méthyl-6-dihydro-9,15-7H-bis-indéno[2.1-b;2′.1′-g]fluorène
✍ Louis Chardonnens; Thomas Stauner 📂 Article 📅 1974 🏛 John Wiley and Sons 🌐 German ⚖ 298 KB

## Abstract Starting from 5‐benzoyl‐2,4‐dibromobenzoic acid and 3‐methyl‐fluorene, the 6‐methyl‐9,15‐dihydro‐__7H__‐diindeno[2.1‐__b__; 2′,1′‐__g__]fluorene, a derivative of a mono‐angular diindenofluorene has been synthesized in 5 steps (overall yield 1,5%).

Fluorénacènes et fluorénaphènes Synthèse
Fluorénacènes et fluorénaphènes Synthèses dans la série des indéno-fluorènes, XVIII. Le diméthyl-5, 6-dihydro-7, 12-indéno[1, 2-a]fluorène
✍ Louis Chardonnens; Josef Häger 📂 Article 📅 1974 🏛 John Wiley and Sons 🌐 German ⚖ 398 KB 👁 1 views

## Abstract Starting from 3, 4‐dimethylfluorene the title compound, 5, 6‐dimethyl‐7, 12‐dihydro‐indeno[1,2‐a]fluorene (IV), is synthesized in four steps (overall yield 9%). The same hydrocarbon is also obtained in four steps starting from the phthalaconecarboxylic acid of __Gabriel__. This corrobor