SN2 vs. E2

[nixon13]

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How do you distinguish between the two?

 

[osimsDDS]

usually a very strong base accompanies E2 reactions, also E2 doesnt care about steric hinderance and can attach tertiary, secondary, or primary...bulky bases is a dead give-away that you have an E2 reaction...

 

[klutzy1987]

I am pretty sure that even a bulky base will have competition on primary halide.