作者:Keith Smith、Charles M. Lindsay、Gareth J. Pritchard
DOI:10.1021/ja00184a040
日期:1989.1
treatment with electrophiles provides a convenient approach to ortho-substituted arenethiol derivatives. The reactions with tetraisopropylthiuram disulfide provide direct access to the corresponding o-phenylene trithiocarbonates. Double lithiation of 4-methoxybenzenethiol results in C-lithiation adjacent to the methoxy group rather than the thiolate residue, indicating that methoxy is a more powerfully ortho-directing
Enantioselective Intramolecular Alkene Hydroaminations Catalyzed by Yttrium Complexes of Axially Chiral Bis(thiolate) Ligands
作者:Joon Young Kim、Tom Livinghouse
DOI:10.1021/ol050294z
日期:2005.4.1
[structure: see text] A yttrium(III) complex derived from proligand 7c has been shown to be a superior catalyst for enantioselective intramolecular alkenehydroaminations that provide cyclic amines with ee's ranging from 69% to 89%.