New enantiopure bis (thioether) and bis (sulfoxide) ligands from benzothiophene

…, C Macovei, G Maitro, G Giambastiani…

Index: Madec, David; Mingoia, Francesco; Macovei, Cristian; Maitro, Guillaume; Giambastiani, Giuliano; Poli, Giovanni European Journal of Organic Chemistry, 2005 , # 3 p. 552 - 557

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Citation Number: 8

Abstract

Abstract The C 2-symmetric compound 2, 3, 2, 3-tetrahydro-2, 2-bi (benzo [b] thiophenyl) and three diastereomeric bis (oxide) derivatives can be synthesized in a few steps from benzo [b]-thiophene by oxidative homocoupling of (R)-2, 3-dihydro-benzo [b] thiophene 1- oxide. This new family of enantiopure bis (thioether) and bis (sulfoxide) ligands forms stable chelating Pd II complexes. The fused pentacyclic structure of the complexes imparts a rigid ...