Technical Notes:
1. Used in direct Bronsted acid catalyzed asymmetric three -component Ka bachnik-F ields reaction .
2.Used in direct catalytic asymmetric synthesis of cyclic aminals from alde hydes .
3.Bronsted acid catalyst for asymmetric acetalization of aliphatic aldehydes .
References:
1. Angew. Chem. Int. Ed. 2013, 52, 4474.
2.J. Am. Chem. Soc. 2008, 130, 15786.
3. Angew. Chem. Int. Ed. 2008, 47, 5079.