Recyclable chiral dinuclear copper(II) complexes catalyzed asymmetric Friedel–Crafts alkylation of 1-naphthol using N-tosyl aldimine
作者:Prathibha Kumari、Ajay Jakhar、Noor-ul H. Khan、Rajkumar Tak、Rukhsana I. Kureshy、Sayed H.R. Abdi、Hari C. Bajaj
DOI:10.1016/j.catcom.2015.06.002
日期:2015.9
efficient dinuclear copper complexcatalyzed Friedel–Crafts reaction has been demonstrated for the alkylation of 1-naphthol using N-tosyl aldimine. In this context, various chiral amino alcohol derived Schiff base ligands with different achiral and chiral linkers were synthesized and their copper (II) complexes were generated in situ. One of the dinuclear copper complexes with chiral linker has emerged
Asymmetric Organocatalytic Aza-Friedel-Crafts Reaction of Naphthols with N-Sulfonyl Imines
作者:Pankaj Chauhan、Swapandeep Singh Chimni
DOI:10.1002/ejoc.201001653
日期:2011.3
The first organocatalyticasymmetric aza-Friedel–Crafts reaction of naphthols with N-sulfonyl imines has been developed. The cupreine-derived bifunctional organocatalyst BzCPN efficiently catalyzes the formation of aza-Friedel–Crafts products in good to excellent yields (up to 99 %) with high enantioselectivities (up to 99.5:0.5 er) under mild reaction conditions, with a low catalyst loading (2–5 mol-%)
The first asymmetric aza-Friedel-Crafts reaction of 2-naphthol with tosylimines was developed via a dinuclear zinc catalyst (up to 98% ee). It provided a new method for the asymmetric synthesis of Betti base derivatives.