00:04
It works backwards to get this compounds.
00:09
Following each step.
00:11
The final step of the synthesis is the hydrogenation.
00:22
It's 2 3d.
00:27
That should be the starting material of this step.
00:30
Must be having a double bond.
00:34
This double bond can be either here or it can be at this position.
00:58
Now working one more step backwards where the witty reaction should result in the double bonded i compound the witty creating the ch2 double bond p p h3 so so this must have originated from the witty reaction between co cs3 and br so so an etic reaction between this and this would have given, would give only this molecule, not this.
01:57
So we can rule out the possibility of formation of this compound.
02:05
Now the ketone propaphenone can be obtained from the acetophenone, corresponding acetyophenone by methylation using lda.
02:29
It is lda and methylyliodide...