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ChemInform Abstract: Synthesis of (P)- and (M)-6,7-Bis[(diphenylphosphanyl)methyl]-8,12-diphenylbenzo[a]heptalenes — Potential Ligands for Homogeneous Asymmetric Catalysis.

✍ Scribed by Peter Mohler; Andreas Johannes Rippert; Hans-Juergen Hansen


Publisher
John Wiley and Sons
Year
2010
Weight
27 KB
Volume
31
Category
Article
ISSN
0931-7597

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Synthesis of (P)- and (M)-6,7-Bis[(diphe
✍ Peter Mohler; Andreas Johannes Rippert; Hans-Jürgen Hansen 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 German ⚖ 267 KB

The title bis(phosphane) ligands have been prepared starting from optically pure diisopropyl (P)-and (M)-8,12-diphenylbenzo[a]heptalene-6,7-dicarboxylates ((P)-1b and (M)-1b) that had been obtained by HPLC separation of rac-1b on a semi-preparative Chiralcel OD column. Reduction of (P)-1b and (M)-1b