K. Nymann et al., NUCLEOPHILIC RING-OPENING OF CYCLIC 1,2-SULFITES WITH NITROGEN NUCLEOPHILES - A ROUTE TO ENANTIOPURE BENZYLIC AMINO-ALCOHOLS, Acta chemica Scandinavica, 52(8), 1998, pp. 1060-1063
The reaction between cyclic 1,2-sulfites and two imide and two sulfona
mide nucleophiles has been Investigated in order to develop a procedur
e for the enantioselective preparation of N-protected vicinal amino al
cohols. The results show that both imide and sulfonamide anions react
with cyclic sulfites, yielding the desired products. In some cases the
regioselectivities are low, and for the sulfonamides products origina
ting from nucleophilic addition to the sulfite sulfur are observed.