Publication Date:
2012-02-18
Description:
Various new C 2 -symmetric bidentate ligands, bearing phosphorus, nitrogen, and sulfur, were obtained in an efficient manner, starting from (±)- trans -3-methylidenecyclopropane-1,2-dicarboxylic acid ( Feist 's acid; (±)- trans - 3 ). The structures of the new bidentate ligands, di( tert- butyl) (±)-[( trans -3-methylidenecyclopropane-1,2-diyl)dimethanediyl]biscarbamate ((±)- 9 ), (±)-( trans -3-methyldienecyclopropane-1,2-diyl)dimethanaminium dichloride ((±)- 10 ), (±)- S , S′- [( trans -3-methylidenecyclopropane-1,2-diyl)dimethanediyl] diethanethioate ((±)- 11 ), and (±)-[( trans -3-methylidenecyclopropane-1,2-diyl)dimethanediyl]bis(diphenylphosphane) ((±)- 12 ), were fully characterized by standard spectroscopic techniques. These new classes of C 2 -symmetric bidentate ligands have the potential to be used in asymmetric catalysis.
Print ISSN:
0018-019X
Electronic ISSN:
1522-2675
Topics:
Chemistry and Pharmacology
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