Heptamethylindenyl (Ind) enables diastereoselective benzamidation of cyclopropenes via Rh(iii)-catalyzed C-H activation

The diastereoselective coupling of -substituted arylhydroxamates and cyclopropenes mediated by Rh(iii) catalysis was successfully developed. Through ligand development, the diastereoselectivity of this reaction was improved using a heptamethylindenyl (Ind*) ligand, which has been rationalized using...

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Veröffentlicht in:Chemical science (Cambridge) 2017, Vol.8 (2), p.1015-1020
Hauptverfasser: Semakul, Natthawat, Jackson, Kelvin E, Paton, Robert S, Rovis, Tomislav
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creator Semakul, Natthawat
Jackson, Kelvin E
Paton, Robert S
Rovis, Tomislav
description The diastereoselective coupling of -substituted arylhydroxamates and cyclopropenes mediated by Rh(iii) catalysis was successfully developed. Through ligand development, the diastereoselectivity of this reaction was improved using a heptamethylindenyl (Ind*) ligand, which has been rationalized using quantum chemical calculations. In addition, the nature of the -substituted ester of benzhydroxamic acid proved important for high diastereoselectivity. This transformation tolerates a variety of benzamides and cyclopropenes that furnish cyclopropa[ ]dihydroisoquinolones with high diastereocontrol, which could then be easily transformed into synthetically useful building blocks for pharmaceuticals and bio-active molecules.
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subjects Benzamide
Chemical reactions
Chemistry
Coupling
Esters
Ligands
Mathematical analysis
Organic compounds
Transformations
title Heptamethylindenyl (Ind) enables diastereoselective benzamidation of cyclopropenes via Rh(iii)-catalyzed C-H activation
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