76716-11-5Relevant articles and documents
Syntheses of extreme sterically hindered 4-methoxyboronic acids
Diemer, Vincent,Chaumeil, Hélène,Defoin, Albert,Carré, Christiane
scheme or table, p. 918 - 929 (2010/03/25)
4-Iodoanisoles 3a,b, 3d and 4-bromoanisoles 4a-d were readily obtained. An extreme steric hindrance precluded obtaining 3c. Catalytic borylation of 3a,b, 3d followed by hydrolysis of boronic ester 26a,b, 26d easily provided the boronic acids 5a,b, 5d. Com
Effect of ligand structure on the zinc-catalyzed Henry reaction. Asymmetric syntheses of (-)-denopamine and (-)-arbutamine
Trost, Barry M.,Yeh, Vince S. C.,Ito, Hisanako,Bremeyer, Nadine
, p. 2621 - 2623 (2007/10/03)
(Matrix presented) Syntheses of variously modified ligands for the dinuclear zinc catalysts for the asymmetric aldol and nitroaldol (Henry) reactions are reported. Catalytic enantioselective nitroaldol reactions promoted by these modified ligands led to efficient syntheses of the β-preceptor agonists (-)-denopamine and (-)-arbutamine.
A New Aromatic Annelation Reaction with Two Synthons, Enaminones and 3-Oxoglutarate. Studies on the β-Carbonyl Compounds Connected with β-Polyketides. VIII
Takeuchi, Naoki,Okada, Naomi,Tobinaga, Seisho
, p. 4355 - 4359 (2007/10/02)
Reactions of the enaminones 1 with dimethyl 3-oxoglutarate in the presence of KF-AcOH or AcONa-AcOH and 18-crown-6 gave the dimethyl 2-hydroxy-1,3-benzenedicarboxylates 3, providing a new aromatic annelation reaction.Keywords - enaminone; dimethyl 3-oxoglutarate; buffer catalysis; aromatic annelation; dimethyl 2-hydroxy-1,3-benzenedicarboxylate