00:01
The question asks when 2 -metall -1 -3 -buta -dine reacts in the presence of hbr, the major product is 1 -bromo 3 -methyl 2 -butene.
00:13
So compliant complete mechanisms to show the formation of the product and explain why the product is made her and consider their reactive intermediates.
00:21
So we're given this 2 -methyl -buta -dine, and i just want to show you guys drawing this out.
00:33
And when we're given this we want to react with hpr and when we react with hbr the first one is going to be the nucleophile so this dying right here we're going to do the most substituted and this ax the electrophile because it's an acid and because this is electrophile and that's a nucleophile this this bond right here is going to attack and dispatch this bromine.
01:06
And when we do that, we form this.
01:12
The carbocadion.
01:13
Sorry, the carbocadion is in our tertiary spot, which we like.
01:17
And then we have the hydrogen here that we just formed.
01:20
And in nature, the most stable product is always going to usually be the thermodynamic product, which is usually the one -four product...