2- -3-methyl- -tetrafluoroborate

Reaction of telluronium methylide with carbonyl compounds (general procedure A solution of LiTMP (1.2 mmol) in THF is added to a solution of diphenyltelluronium methyl tetrafluoroborate (1.2 mmol) in THF (8 mL) at -78°C under Nj. The mixture is warmed to -70°C and stirred for 30 min. After cooling to -78°C, the carbonyl compound (1.0 mmol) in THF (2 mL) is added. The reaction mixture is then allowed to warm at room temperature. After the reaction is complete (monitored by TLC), the usual work-up and flash chromatography gives the product. 

IIH-Imidazollum, 1-butyl-3-methyl-, chloride (1-) 1H-lmldazollum, 1-butyl-3-methyl-, tetrafluoroborate (1-) 1H-lmldazollum, 1-butyl-3-methyl-, hexafluorophosphate (1-)]... 

Butyl-3-methylimidazolium tetrafluoroborate 1 H-lmidazolium, 1 -butyl-3-methyl-, tetrafluoroborate(l-) (13) (174501-65-6)... 

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