Intramolecular hydroamination of trisubstituted aminoallenes catalyzed by titanium complexes of diaryl substituted tridentate imine-diols
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DOI: 10.1016/j.poly.2021.115070
Abstract: Abstract Our laboratory has developed catalysts based on earth abundant titanium for asymmetric reactions including intramolecular hydroamination. Previously, we showed that titanium complexes of imine diol ligands showed improved enantioselectivity relative to complexes with bidentate… read more here.
Keywords: diaryl substituted; titanium complexes; intramolecular hydroamination; hydroamination ... See more keywords
A Synthetic Route to Chiral Benzo-Fused N-Heterocycles via Sequential Intramolecular Hydroamination and Asymmetric Hydrogenation of Anilino-Alkynes
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DOI: 10.1021/acs.organomet.9b00183
Abstract: An efficient sequential intramolecular hydroamination/asymmetric hydrogenation reaction under catalysis of a single chiral ruthenium complex or a binary system consisting of achiral gold complex an... read more here.
Keywords: asymmetric hydrogenation; intramolecular hydroamination; sequential intramolecular; hydroamination asymmetric ... See more keywords
Gold(I)-Catalyzed Intramolecular Hydroamination and Hydroalkoxylation of Alkynes: Access to Original Heterospirocycles.
Sign Up to like & getrecommendations! Published in 2020 at "Organic letters"
DOI: 10.1021/acs.orglett.0c02070
Abstract: We report here a simple and robust gold-catalyzed annulation reaction, giving N- and O-spirocycles in good to excellent yields. We have prepared a library of protected amines and tertiary alcohols that give, upon cyclization with… read more here.
Keywords: hydroamination hydroalkoxylation; alkynes access; gold catalyzed; hydroalkoxylation alkynes ... See more keywords
Catalytic intramolecular hydroamination of aminoallenes using titanium complexes of chiral, tridentate, dianionic imine-diol ligands.
Sign Up to like & getrecommendations! Published in 2019 at "Dalton transactions"
DOI: 10.1039/c8dt05156a
Abstract: Alkylation of d- or l-phenylalanine or valine alkyl esters was carried out using methyl or phenyl Grignard reagents. Subsequent condensation with salicylaldehyde, 3,5-di-tert-butylsalicylaldehyde, or 5-fluorosalicylaldehyde formed tridentate, X2L type, Schiff base ligands. Chiral shift NMR… read more here.
Keywords: catalytic intramolecular; titanium; hydroamination; intramolecular hydroamination ... See more keywords