An Improved Protocol for the Aldehyde Olefination Reaction Using (bmim) (NTf_𝟐) as Reaction Medium

Table 1

Aldehyde olefination reaction in different solvent systems.

Entry	Ionic liquid (1 mmol)	Yield (%)^a	𝐸/𝑍^b
1	(bmim)(Cl)	70	3 : 1
2	(bmim)(PF6)	75	5 : 1
3	(bmim)(NTf2)	88	10 : 1
4	Toluene	73	6 : 1

^aYield was calculated after column chromatography.
^bAll 𝐸/𝑍 ratios were calculated by ¹HNMR.