773868-40-9Relevant articles and documents
Steric hindrance effects in tripodal ligands for extraction and back-extraction of Ag+
Hiruta, Yuki,Watanabe, Takafumi,Nakamura, Etsuko,Iwasawa, Naoko,Sato, Hiroyasu,Hamada, Kensaku,Citterio, Daniel,Suzuki, Koji
, p. 9791 - 9798 (2014/03/21)
A novel series of tripodal ligands with thiophenylether arms connected to an anchoring nitrogen has been investigated. Seven tripodal ligands were synthesized by combining methyl, isopropyl, and tert-butyl residue bearing thiophenylether sites as groups w
Nickel-catalysed Substitutions of Aryl tert-Butyl Sulfones with Organometallic Reagents: Synthesis of ortho-Substituted Unsymmetrical Biaryls
Clayden, Jonathan,Cooney, J. Jonathan A.,Julia, Marc
, p. 7 - 14 (2007/10/02)
In the presence of a catalytic amount of a nickel salt, aryl tert-butyl sulfones react with aryl Grignard reagents to give biaryls.This reaction is used in conjunction with the powerful ortho-lithiation-directing ability of aryl tert-butyl sulfonyl groups to make unsymmetrical ortho-substituted biaryls.In certain cases, the substitution of an aryl alkylsulfonyl group by an organometallic reagent is possible without a transition metal catalyst.