Table 2.

Additive screening for the cyclopropanation of acrylates with EDA and [Co(MeTAA)].^[a]

Entry[a]	Olefin	Additive	Product	Yield [%][c]	trans/cis [d]
1		–		78	97:3
2				94	97:3
3				90	97:3
4		–		52	93:7
5				45	94:6
6[b]				70	94:6
7				79	93:7
8[b]				81	93:7
9				83	94:6

[a] Performed using 1.5 mol % [Co(MeTAA)] and 1.5 mol % additive under N₂ with 1.0 equiv. of EDA (0.48 m) and 2 equiv. of olefin. [b] Performed using 1.5 mol % [Co(MeTAA)] and 25 mol % additive with 1.0 equiv. of EDA (0.38 m) and 3 equiv. of olefin. [c] Isolated yields. [d] Determined by using GC.