Asymmetric Synthesis and Chiroptical Properties of Enantiopure Helical Ferrocenes
作者:Antonio Urbano、Ana M. del Hoyo、Alicia Martínez-Carrión、M. Carmen Carreño
DOI:10.1021/acs.orglett.9b01522
日期:2019.6.21
An enantiopure helical ferrocene (Rp)-5 with five ortho-condensed aromatic rings was synthesized using a PtCl2-catalyzed cycloisomerization of planar-chiral 2-ethynyl-1-(4-phenanthrenyl)ferrocene (Rp)-6f, prepared in 3 steps from known enantiopure sulfinyl ferrocenyl boronic acid (SS,Sp)-7, as the source of planar chirality. This pentacyclic helical ferrocene showed a very high optical rotation value
Mercuration of ferrocenyl- p -tolyl sulfoxide and its conversion to 1,2-disubstituted ferrocenes
作者:Venkatesan Sathesh、Ramu V. Ranga Naidu Chinta、Ramesh Mamidala、Vanga Mukundam、Kunchala Dhanunjayarao、Krishnan Venkatasubbaiah
DOI:10.1016/j.jorganchem.2017.10.028
日期:2017.12
1-(p-Tolylsulfinyl)-2-(chloromercurio)ferrocene (2) was prepared by direct mercuration of ferrocenylsulfoxide (1). This reaction can be performed at room temperature in open air. Cross-coupling reactions of compound 2 and aryl halides especially aryl iodides resulted in 1,2-disubstituted ferrocene derivatives with moderate to good yields.
Synthesis and first application of a new family of monophosphine ferrocene ligands (MOPF)
作者:Henriette L. Pedersen、Mogens Johannsen
DOI:10.1039/a908921g
日期:——
A new family of monophosphine ferrocene ligands (MOPF) has been synthesised in two steps from an optically pure ferrocenyl sulfoxide and the first preliminary studies employing these ligands in asymmetric hydrosilylation of styrene are presented.