Synthetic Approach toward Enantiopure Cyclic Sulfinamides.

A synthetic approach toward densely substituted enantiopure cyclic sulfinamides possessing up to four consecutive stereogenic centers was developed based on a completely diastereoselective S N 2' cyclization/ tert -Bu cleavage sequence. Diastereospecific transformation of the obtained scaffold into chiral S VI derivatives such as sulfoximines and sulfonimidamides is demonstrated.