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Phosphorus pentoxide in organic synthesis. XIX. Mixtures of phosphorus pentoxide and ortho-substituted arylamines as reagents in the synthesis of 9-aryl-9H-purin-6-amines

✍ Scribed by Khairy A. M. El-Bayouki; Flemming E. Nielsen; Erik B. Pedersen

Book ID
112127894
Publisher
Journal of Heterocyclic Chemistry
Year
1985
Tongue
English
Weight
296 KB
Volume
22
Category
Article
ISSN
0022-152X

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📜 SIMILAR VOLUMES

Phosphorus Pentoxide in Organic Synthesi
Phosphorus Pentoxide in Organic Synthesis, XVIII. Phosphorus Pentoxide and Secondary Amine Mixtures in a New Synthesis ofN6,N6-Dialkyl- andN6-Alkyl,N6-aryl-9H-purin-6-amines
✍ El-Bayouki, Khairy A. M. ;Nielsen, Flemming E. ;Pedersen, Erik B. 📂 Article 📅 1985 🏛 John Wiley and Sons 🌐 English ⚖ 263 KB

## Abstract A series of __N__^6^,__N__^6^‐disubstituted 9__H__‐purin‐6‐amines **2a**–**i** was prepared from 5‐acetamido‐6‐amino‐2‐methylpyrimidin‐4(3__H__)‐one (**1**) and a secondary amine or its hydrochloride in the presence of phosphorus pentoxide and triethylamine hydrochloride.

Phosphoramides, XV. Phosphorus pentoxide
Phosphoramides, XV. Phosphorus pentoxide amine mixtures as reagents in the synthesis of 2-(dialkylamino)quinolines
✍ Hansen, Bo W. ;Pedersen, Erik B. 📂 Article 📅 1981 🏛 John Wiley and Sons 🌐 English ⚖ 358 KB

## Abstract 2‐(Dialkylamino)quinolines were prepared by treating acetanilides and __N,N__‐dialkylformamides with a mixture of phosphorus pentoxide and a dialkylamine at 250°C. A mechanism which is related to HMPT induced ring closure reactions is proposed. Proper choice of amine and formamide is im