Bridgehead nitrogen heterocycles. Synthesis of [1,2,4]triazolo[1,5-a]pyridin-1-ium and pyrido[2,1-f][1,2,4]triazin-9-ium derivatives
✍ Scribed by Molina, Pedro; T�rraga, Alberto; Vilaplana, Mar�a Jes�s; Hurtado, Emilia; Lorenzo, Mercedes
- Book ID
- 126498789
- Publisher
- Royal Society of Chemistry
- Year
- 1983
- Weight
- 559 KB
- Volume
- 0
- Category
- Article
- ISSN
- 1472-7781
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## Abstract magnified image The iminophosphorane 1‐amino‐6‐(triphenylphosphoranylideneamino)‐2‐oxo‐4‐phenyl‐1,2‐dihydro‐pyridine‐3,5‐dicarbonitrile **2** prepared from 1,6‐diaminopyridine **1** reacts with heterocumulenes such as carbon disulfide and phenylisocyanate, and with acid chlorides, acid
## Abstract magnified image __E__‐3‐(__N,N__‐Dimethylamino)‐1‐(3‐methylthiazolo[3,2‐__a__]benzimidazol‐2‐yl)prop‐2‐en‐1‐one (**2**) was synthesized by the reaction of 1‐(3‐methylthiazolo[3,2‐__a__]benzimidazol‐2‐yl)ethanone (**1**) with dimethylformamide‐dimethylacetal. The reaction of **2** with