Pyridine → N-[2-(Allyloxy)ethyl]pyridinium bis(pentafluoroethyl)phosphinate

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Reaction Conditions

Reaction Steps

2-(Allyloxy)ethyl bis(pentafluoroethyl)phosphinate, (C2F5)2P(O)O—CH2CH2OCH2CH═CH2, (2.407 g; 6.2 mmol) is slowly added dropwise to dry and cooled (0° C.) pyridine (0.502 g; 6.3 mmol) in a 25 ml glass flask. An orange, more highly viscous solution forms spontaneously, which is stirred at 0° C. for 1 h, warmed and stirred at room temperature for 2 h. The readily volatile constituents are removed in vacuo (10−3 mbar) at room temperature. N-[2-(Allyloxy)ethyl]pyridinium bis(pentafluoroethyl)phosphinate, [CH2═CHCH2OCH2CH2Py][(C2F5)2P(O)O], is isolated (2.829 g; 6.1 mmol) as highly viscous, intensely red-brown liquid in quantitative yield and a purity of 89%.

Provenance & Evidence