Synthesis

Synthesis of PO (OR) 2-and PR3+-Disubstituted Pyridines via N-(Trifluoromethylsulfonyl) pyridinium Triflates

M Haase, H Goerls, E Anders

文献索引：Haase, Mirko; Goerls, Helmar; Anders, Ernst Synthesis, 1998 , # 2 p. 195 - 200

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被引用次数: 9

摘要

Abstract: The efficient synthesis of dialkoxyphosphoryl-and phosphonio-substituted pyridines is reported. The cationic heterocycle of N-(trifluoromethylsulfonyl) pyridinium triflate (3), or of analogous N-(trifluoromethylsulfonyl) compounds prepared from pyridine-4- phosphonium salts 5, turns out to be sufficiently activated to allow attack of P (OR) 3 and PR3+ nucleophiles to give the novel compounds bis (dialkoxyphosphoryl) pyridines 11 ...