How feasible is an intramolecular cyclization of a tertiary amine and an aldehyde? Expecting a hemi-aminal with quaternary nitrogen. Any suggestion?

I am looking for any procedure or suggestion on an intramolecular cyclization of a tertiary amine and an aldehyde. The product should be the resulting hemi-aminal. What condition should I use? Do...

29 June 2017 9,350 4 View