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
✦ LIBER ✦
Synthesis and Chiroptical Properties of Dimethyl 8,12-Diphenylbenzo[d]heptalene-6,7-dicarboxylate
✍ Scribed by Andreas J. Rippert; Hans-Jürgen Hansen
- Publisher
- John Wiley and Sons
- Year
- 1993
- Tongue
- German
- Weight
- 403 KB
- Volume
- 76
- Category
- Article
- ISSN
- 0018-019X
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## Abstract magnified image A series of sixteen new derivatives have been obtained and all have potentially useful pharmacological activity. The treatment of 7‐[(__o__‐chloro and __p__‐bromo)phenyl]‐7,8,9,10,11,12‐hexahydrobenz[__c__]acridin‐8‐one and Lawesson's reagent obtains the corresponding 7