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In the final step I have extracted the hydrogen from the alpha carbon, please tell me where I am wrong. Thanks

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  • $\begingroup$ You certainly can form the anion of the methyl ketone reversibly but the proposed displacement gives a strained cyclobutanone. The faster route is beta-elimination to give the unsaturated ketone. BTW, there is another possible product of this aldol condensation. $\endgroup$ – user55119 Apr 6 at 18:50
  • $\begingroup$ @user55119 thanks for your insights, I know there are other products of this aldol condensation, I just wanted to know why this particular product isn't possible. Thank you. $\endgroup$ – Parantap Bhadoria Apr 7 at 9:05