39Nope that ain't it.....try again :P
Hint : The ketone is hindered.
PS : It's 22nd now so I'm allowed to post the question :P
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3939Hmm...unless you show me your entire working, I cannot judge. Besides the product is incorrect.
39A itself is wrong....but an aldol cyclization does come later :P
39No.. A is correct...but it is mostly wrong. The general idea is correct however. But after LDA it all goes wrong. PCl5 has other uses, apart from nucleophilic substitution.
In addition the group you have substituted doesn't exist when you try to substitute it.
39Here is the answer then...
Go to http://targetiit.com/iit-jee-forum/posts/a-f-15268.html for the explanation.