- Organocatalytic, asymmetric synthesis of 3-sulfenylated N-Boc-protected oxindoles.
Organocatalytic, asymmetric synthesis of 3-sulfenylated N-Boc-protected oxindoles.
Chemistry (Weinheim an der Bergstrasse, Germany) (2012-07-28)
Chuan Wang, Xuena Yang, Charles C J Loh, Gerhard Raabe, Dieter Enders
PMID22836361
ABSTRACT
Sulfenylated oxindoles: The first asymmetric sulfenylation of N-Boc-protected oxindoles has been developed to provide products containing a tetrasubstituted stereogenic center in high to excellent yields (86-98 %) and, in most cases, excellent enantioselectivities (up to 96 % ee; see scheme).
MATERIALS