Which mechanism will the following reaction follow?
Will it follow E2 mechanism? If yes, then how would 2,3-dibromobutane undergo this reaction?
Does it form both cis and trans butene or is the product butyne?
Here is a link to a website that has mentioned it is E2 mechanism but has low stereospecificity. So does Zn act as the base donating the electrons? If this happens then why isn't hydrogen leaving the substrate resulting in dehydrohalogenation and formation of alkyne? Why are two halogens leaving the substrate to give an alkene instead of alkyne