Efficient and General Synthesis of Novel β-Polyfluoroalkoxy Vinamidinium Salts
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Novel β-polyfluoroalkoxy vinamidinium salts <B>3</B> and/or <B>4</B> were synthesized in good yields by the reaction of <I>N</I>-(2-polyfluoroalkoxy-3,3-difluoro-1-propenyl)trimethylammonium iodides (<B>2</B>), prepared from <I>N</I>-(2,3,3-trifluoro-1-propenyl)trimethylammonium iodide (<B>1</B>), with secondary amines in MeCN at 70 °C for 1 h. The salts were also obtainable in comparable yields by the one-pot reaction of <B>1</B> with sodium polyfluoroalkoxide followed by treatment with amines.
- Chemistry Letters
Chemistry Letters 1997(9), 893-894, 1997-09
The Chemical Society of Japan