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New Synthetic Approach to Phosphonium Salts Derived from 4,5-Bis(diphenylphosphino)-1-phenylpyridazin-6-one and Quantum-Chemical Calculations of Their Formation

✍ Scribed by N. A. Polezhaeva; Yu. M. Volodina; A. V. Prosvirkin; V. G. Sakhibullina; G. A. Chmutova


Book ID
110311842
Publisher
Springer
Year
2001
Tongue
English
Weight
41 KB
Volume
71
Category
Article
ISSN
1070-3632

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New synthetic approaches to bridgehead n
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## Abstract Bridgehead nitrogen heterocycles **3a**, **b** and **6a**, **b** containing the thieno‐pyrimidine system have been prepared from the versatile intermediates 3‐amino‐2,3‐dihydro‐5,6‐dimethyl‐2‐thioxo‐thieno[2,3‐__d__]pyrimidin‐4‐(1__H__)‐one **1** and its hydrazinium or potassium salts *