Catalytic activities of Schiff base transition metal complexes

10. Patented Literature 2616 10.1. Esterification 2616 10.2. Ether Formation 2619 10.2.1. Etherification without Cyclization 2619 10.2.2. Etherification with Cyclization 2624 10.3. N-Alkylation 2625 10.4. Other Reactions 2627 11. Summary and Outlook 2628 12. Note Added in Proof 2628 13. Abbreviations Used in This Review 2629 14. Acknowledgments 2629 15. Supporting Information Available 2630 16. References 2630

Mitsunobu and Related Reactions: Advances and Applications

Preparation of polymer-supported ligands and metal complexes for use in catalysis.

Laboratory for Advanced Materials and New Catalysis, School of Chemistry and Materials Science, Hubei University, Wuhan 430062, China,Laboratory of Natural Gas Utilization and Applied Catalysis, Dalian Institute of Chemical Physics of Chinese Academy of Sciences, Dalian 116023,China, and Jingmen Technological College, Jingmen 448000, ChinaReceived June 30, 2004

Advances in Homogeneous and Heterogeneous Catalytic Asymmetric Epoxidation

Chromium− and Manganese−salen Promoted Epoxidation of Alkenes

Homochiral 1-alkyl-3,4-dihydroxypyrrolidines, ( S , S )- and ( R , R )- 5 were obtained by cyclization and reduction of both enantiomers of (+)- and (−)-tartaric acid, respectively. Also ( S , S )-3,4-dihydroxytetrahydrofurane 6 was prepared from (+)-diethyl tartrate. All these heterocyclic vic -diols underwent twofold Mitsunobu reaction (Ph 3 P/DEAD/HN 3 ) followed by catalytic hydrogenation forming stereospecifically the corresponding primary vicinal diamines ( R , R )-, (S,S)- 2 and (R,R)- 3 . The absolute configuration of diamines 2, 3 was established by the exciton-coupling CD spectra of their N,N′-diphthaloyl derivatives.

Synthesis of C2 symmetric primary vicinal diamines. Double stereospecific mitsunobu reaction on the heterocyclic diols derived from tartaric acid

Synthesis and characterization of nickel(II), copper(II), manganese(III) and iron(III) complexes with new chiral salen-type ligand |N,N′-bis(3,5-di-tert-butylsalicylidene)-(1R,3S)-1,3-diamine-1,2,2-trimethylcyclopentane|

The two-phase epoxidation of olefins with sodium hypochlorite catalyzed by the salen-type Mn(III) complex 1 was examined in the presence of various additional ligands and 4-dodecyloxypyridine 1-oxide (3) was found as the most effective one. The system 1–3 was studied by conductometry and UV-Vis spectra. The results support the hypothesis that the disproportionation of the dimeric μ-oxo Mn(IV) complex producing an active oxidant is strongly favoured by the presence of 3.

Anil Gupta

Papers

Synthesis of C2 symmetric primary vicinal diamines. Double stereospecific mitsunobu reaction on the heterocyclic diols derived from tartaric acid

Synthesis and characterization of nickel(II), copper(II), manganese(III) and iron(III) complexes with new chiral salen-type ligand |N,N′-bis(3,5-di-tert-butylsalicylidene)-(1R,3S)-1,3-diamine-1,2,2-trimethylcyclopentane|

Influence of additional ligands on the two-phase epoxidation with sodium hypochlorite catalyzed by (salen)managanese(III) complexes

Synthesis of C2 Symmetric Primary Vicinal Diamines. Double Stereospecific Mitsunobu Reaction on the Heterocyclic Diols Derived from Tartaric Acid.