Conjugate Addition and Ether Formation

[lo2]

Homework Statement

http://i43.tinypic.com/nxvw41.jpg

Ok here it is molecule B.

http://i39.tinypic.com/333aaro.jpg

Ok and here it is problem nr. 8, second molecule.

Homework Equations

No equations needed.

The Attempt at a Solution

1)
So why is it that we do not add any acid here, as far as I know one need acid, in order to do a succesfull carbonlyl or conjugate addition, right? So how come? And because it is LiMe (which is a hard nucleophile) I think it will be a carbonyl addition, so am I right?

2)
Well I did not really get that far as I am really not sure how to produce an ether from conjugate addition... So how to?

Edit: images replaced with links; please don't post large images as they are breaking forum formatting.

 

[chemisttree]

Homework Statement

http://i43.tinypic.com/nxvw41.jpg

Ok here it is molecule B.

http://i39.tinypic.com/333aaro.jpg

Ok and here it is problem nr. 8, second molecule.

Homework Equations

No equations needed.

The Attempt at a Solution

1)
So why is it that we do not add any acid here, as far as I know one need acid, in order to do a succesfull carbonlyl or conjugate addition, right? So how come? And because it is LiMe (which is a hard nucleophile) I think it will be a carbonyl addition, so am I right?

Yes, you are correct. Why can't you draw the initially-formed product (before acid is added)?

2)
Well I did not really get that far as I am really not sure how to produce an ether from conjugate addition... So how to?

There is a hint in the previous problem. I'm not sure how to do this in one step but it's possible in two.