rrr_asd

Unfortunately, the Lewis acid as a catalyst is not suitable.

I tried to find information on this issue, but found reactions required or Lewis acid or heat.

I think, it would be better if I tell you more about the problem.

I'm looking for the substance non-biological origin, that have a spiral form, and can also compresses and decompresses as spring.

Rings like a coumarin will open in a basic environment. They must to unclench my spring. I need some group that will form a cycle in acidic environment, but will not change in the basic environment.

Hello!

I need a cyclization reaction which goes in acidic environment.

But that substance should not react in a basic environment.

Thanks in advance.

Could I please get help with the naming of these organic molecules?

Cheers.

edit by mod - I have placed answers in spoiler - please try not to give direct answers to homework questions