[disneygurl2010]

Esters & Epoxides - What to look for in solving these different problems?

[discodermolide]

Esters & Epoxides - What to look for in solving these different problems?

What are your ideas here?

[disneygurl2010]

I'm thinking for the first one, since there is a strong based present, the epoxide will break up.  The one with R,R-(+)-diethyltartrate will form an epoxide pointing down in space.  The 3rd, I am not quite sure where to start =/

[discodermolide]

I'm thinking for the first one, since there is a strong based present, the epoxide will break up.  The one with R,R-(+)-diethyltartrate will form an epoxide pointing down in space.  The 3rd, I am not quite sure where to start =/

I think you got them mixed up. Please start again from the top going sequentially down the list. Then I might understand what you are saying.

[disneygurl2010]

For the first one, I think that TsOH is a strong acid but MeOH is a strong base..?  so it would perhaps break the epoxide into an alkane in the final product?

For the second, EtN I know is a good amine base but I am not sure where to go from here.

For the last, the solvent at the bottom makes a product that has an epoxide with the ring but perhaps it has chirality and points up?

[discodermolide]

For the first one, I think that TsOH is a strong acid but MeOH is a strong base..?  so it would perhaps break the epoxide into an alkane in the final product?

For the second, EtN I know is a good amine base but I am not sure where to go from here.

For the last, the solvent at the bottom makes a product that has an epoxide with the ring but perhaps it has chirality and points up?

The first one is a simple acid catalyzed epoxied opening to give an alcohol.
The second is a protection of the primary alcohol.
The third is a Sharpless epoxidation.