Organocatalytic, Asymmetric Synthesis of 3-SulfenylatedN-Boc-Protected Oxindoles
摘要:
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).
Enantioselective Organocatalyzed Sulfenylation of 3-Substituted Oxindoles
作者:Xin Li、Cong Liu、Xiao-Song Xue、Jin-Pei Cheng
DOI:10.1021/ol301833f
日期:2012.9.7
A highly enantioselectivesulfenylation reaction with respect to 3-substituted oxindoles and electrophilic sulfur reagents by a quinidine catalyst was investigated.